diff --git a/src/BlockHandler/BlockPluginWrapper.php b/src/BlockHandler/BlockPluginWrapper.php
index ed5ee9b0..95340ee4 100644
--- a/src/BlockHandler/BlockPluginWrapper.php
+++ b/src/BlockHandler/BlockPluginWrapper.php
@@ -13,6 +13,6 @@ class BlockPluginWrapper implements BlockHandlerInterface {
 	}
 
 	public function handle($params, $content, Template $template, &$repeat) {
-		return call_user_func($this->callback, $params, $content, $template, $repeat);
+		return call_user_func_array($this->callback, [$params, $content, $template, &$repeat]);
 	}
 }
\ No newline at end of file
diff --git a/src/BlockHandler/TextFormat.php b/src/BlockHandler/TextFormat.php
index 70e7698b..af545fa9 100644
--- a/src/BlockHandler/TextFormat.php
+++ b/src/BlockHandler/TextFormat.php
@@ -2,6 +2,7 @@
 
 namespace Smarty\BlockHandler;
 
+use Smarty\Smarty;
 use Smarty\Template;
 
 /**
@@ -78,8 +79,8 @@ class TextFormat implements BlockHandlerInterface {
 			$_paragraph =
 				preg_replace(
 					array(
-						'!\s+!' . \Smarty::$_UTF8_MODIFIER,
-						'!(^\s+)|(\s+$)!' . \Smarty::$_UTF8_MODIFIER
+						'!\s+!' . Smarty::$_UTF8_MODIFIER,
+						'!(^\s+)|(\s+$)!' . Smarty::$_UTF8_MODIFIER
 					),
 					array(
 						' ',
diff --git a/src/Compile/BlockCompiler.php b/src/Compile/BlockCompiler.php
index 0e66dfac..f7b0660d 100644
--- a/src/Compile/BlockCompiler.php
+++ b/src/Compile/BlockCompiler.php
@@ -10,6 +10,10 @@
 
 namespace Smarty\Compile;
 
+use Smarty\Compiler\Template;
+use Smarty\CompilerException;
+use Smarty\Exception;
+
 /**
  * Smarty Internal Plugin Compile Block Plugin Class
  *
@@ -33,78 +37,117 @@ class BlockCompiler extends Base {
 	 */
 	public $nesting = 0;
 
+
 	/**
 	 * Compiles code for the execution of block plugin
 	 *
 	 * @param array $args array with attributes from parser
-	 * @param \Smarty\Compiler\Template $compiler compiler object
+	 * @param Template $compiler compiler object
 	 * @param array $parameter array with compilation parameter
 	 * @param string $tag name of block plugin
 	 * @param string $function PHP function name
 	 *
 	 * @return string compiled code
-	 * @throws \Smarty\CompilerException
-	 * @throws \Smarty\Exception
+	 * @throws CompilerException
+	 * @throws Exception
 	 */
-	public function compile($args, \Smarty\Compiler\Template $compiler, $parameter = [], $tag = null, $function = null) {
+	public function compile($args, Template $compiler, $parameter = [], $tag = null, $function = null) {
+
 		if (!isset($tag[5]) || substr($tag, -5) !== 'close') {
-			// opening tag of block plugin
-			// check and get attributes
-			$_attr = $this->getAttributes($compiler, $args);
-			$this->nesting++;
-			unset($_attr['nocache']);
-			[$callback, $_paramsArray, $callable] = $this->setup($compiler, $_attr, $tag, $function);
-			$_params = 'array(' . implode(',', $_paramsArray) . ')';
-			// compile code
-			$output = "<?php ";
-			if (is_array($callback)) {
-				$output .= "\$_block_plugin{$this->nesting} = isset({$callback[0]}) ? {$callback[0]} : null;\n";
-				$callback = "\$_block_plugin{$this->nesting}{$callback[1]}";
-			}
-			if (isset($callable)) {
-				$output .= "if (!is_callable({$callable})) {\nthrow new \\Smarty\\Exception('block tag \'{$tag}\' not callable or registered');\n}\n";
-			}
-			$output .= "\$_block_repeat=true;\necho {$callback}({$_params}, null, \$_smarty_tpl, \$_block_repeat);\nwhile (\$_block_repeat) {\nob_start();?>";
-			$this->openTag($compiler, $tag, [$_params, $compiler->nocache, $callback]);
-			// maybe nocache because of nocache variables or nocache plugin
-			$compiler->nocache = $compiler->nocache | $compiler->tag_nocache;
+			$output = $this->compileOpeningTag($compiler, $args, $tag, $function);
 		} else {
-			// must endblock be nocache?
-			if ($compiler->nocache) {
-				$compiler->tag_nocache = true;
-			}
-			// closing tag of block plugin, restore nocache
-			[$_params, $compiler->nocache, $callback] = $this->closeTag($compiler, substr($tag, 0, -5));
-			// compile code
-			if (!isset($parameter['modifier_list'])) {
-				$mod_pre = $mod_post = $mod_content = '';
-				$mod_content2 = 'ob_get_clean()';
-			} else {
-				$mod_content2 = "\$_block_content{$this->nesting}";
-				$mod_content = "\$_block_content{$this->nesting} = ob_get_clean();\n";
-				$mod_pre = "ob_start();\n";
-				$mod_post = 'echo ' . $compiler->compileModifier($parameter['modifier_list'], 'ob_get_clean()')
-					. ";\n";
-			}
-			$output =
-				"<?php {$mod_content}\$_block_repeat=false;\n{$mod_pre}echo {$callback}({$_params}, {$mod_content2}, \$_smarty_tpl, \$_block_repeat);\n{$mod_post}}\n";
-			$output .= '?>';
+			$output = $this->compileClosingTag($compiler, $tag, $parameter, $function);
 		}
 		return $output;
 	}
 
 	/**
-	 * Setup callback and parameter array
+	 * Returns the code used for the isset check
 	 *
-	 * @param \Smarty\Compiler\Template $compiler
-	 * @param array $_attr attributes
-	 * @param string $tag
-	 * @param string $function
+	 * @param string $tag tag name
+	 * @param string $function base tag or method name
 	 *
-	 * @return array
+	 * @return string
 	 */
-	protected function setup(\Smarty\Compiler\Template $compiler, $_attr, $tag, $function) {
-		$_paramsArray = $this->formatParamsArray($_attr);
-		return [$function, $_paramsArray, null];
+	protected function getIsCallableCode($tag, $function): string {
+		return "\$_smarty_tpl->smarty->getBlockHandler(" . var_export($function, true) . ")";
 	}
+
+	/**
+	 * Returns the full code used to call the callback
+	 *
+	 * @param string $tag tag name
+	 * @param string $function base tag or method name
+	 *
+	 * @return string
+	 */
+	protected function getFullCallbackCode($tag, $function): string {
+		return "\$_smarty_tpl->smarty->getBlockHandler(" . var_export($function, true) . ")->handle";
+	}
+
+	/**
+	 * @param Template $compiler
+	 * @param array $args
+	 * @param string|null $tag
+	 * @param string|null $function
+	 *
+	 * @return string
+	 */
+	private function compileOpeningTag(Template $compiler, array $args, ?string $tag, ?string $function): string {
+
+		// check and get attributes
+		$_attr = $this->getAttributes($compiler, $args);
+		$this->nesting++;
+		unset($_attr['nocache']);
+		$_params = 'array(' . implode(',', $this->formatParamsArray($_attr)) . ')';
+
+		// compile code
+		$output = "<?php \$_block_repeat=true;
+if (!" . $this->getIsCallableCode($tag, $function) .") {\nthrow new \\Smarty\\Exception('block tag \'{$tag}\' not callable or registered');\n}\n
+echo " . $this->getFullCallbackCode($tag, $function) . "({$_params}, null, \$_smarty_tpl, \$_block_repeat);
+while (\$_block_repeat) {
+  ob_start();
+?>";
+		$this->openTag($compiler, $tag, [$_params, $compiler->nocache]);
+		// maybe nocache because of nocache variables or nocache plugin
+		$compiler->nocache = $compiler->nocache | $compiler->tag_nocache;
+		return $output;
+	}
+
+	/**
+	 * @param Template $compiler
+	 * @param string $tag
+	 * @param array $parameter
+	 * @param string|null $function
+	 *
+	 * @return string
+	 * @throws CompilerException
+	 * @throws Exception
+	 */
+	private function compileClosingTag(Template $compiler, string $tag, array $parameter, ?string $function): string {
+		// must endblock be nocache?
+		if ($compiler->nocache) {
+			$compiler->tag_nocache = true;
+		}
+		// closing tag of block plugin, restore nocache
+		$base_tag = substr($tag, 0, -5);
+		[$_params, $compiler->nocache] = $this->closeTag($compiler, $base_tag);
+		// compile code
+		if (!isset($parameter['modifier_list'])) {
+			$mod_pre = $mod_post = $mod_content = '';
+			$mod_content2 = 'ob_get_clean()';
+		} else {
+			$mod_content2 = "\$_block_content{$this->nesting}";
+			$mod_content = "\$_block_content{$this->nesting} = ob_get_clean();\n";
+			$mod_pre = "ob_start();\n";
+			$mod_post = 'echo ' . $compiler->compileModifier($parameter['modifier_list'], 'ob_get_clean()')
+				. ";\n";
+		}
+		$output = "<?php {$mod_content}\$_block_repeat=false;\n{$mod_pre}";
+		$callback = $this->getFullCallbackCode($base_tag, $function);
+		$output .= "echo {$callback}({$_params}, {$mod_content2}, \$_smarty_tpl, \$_block_repeat);\n";
+		$output .= "{$mod_post}}\n?>";
+		return $output;
+	}
+
 }
diff --git a/src/Compile/ObjectMethodBlockCompiler.php b/src/Compile/ObjectMethodBlockCompiler.php
index 71853639..18df7bcc 100644
--- a/src/Compile/ObjectMethodBlockCompiler.php
+++ b/src/Compile/ObjectMethodBlockCompiler.php
@@ -11,6 +11,8 @@
 namespace Smarty\Compile;
 
 use Smarty\Compiler\Template;
+use Smarty\CompilerException;
+use Smarty\Exception;
 
 /**
  * Smarty Internal Plugin Compile Object Block Function Class
@@ -21,18 +23,19 @@ use Smarty\Compiler\Template;
 class ObjectMethodBlockCompiler extends BlockCompiler {
 
 	/**
-	 * Setup callback and parameter array
-	 *
-	 * @param Template $compiler
-	 * @param array $_attr attributes
-	 * @param string $tag
-	 * @param string $function
-	 *
-	 * @return array
+	 * @inheritDoc
 	 */
-	protected function setup(Template $compiler, $_attr, $tag, $function) {
-		$_paramsArray = $this->formatParamsArray($_attr);
-		$callback = ["\$_smarty_tpl->smarty->registered_objects['{$tag}'][0]", "->{$function}"];
-		return [$callback, $_paramsArray, "array(\$_block_plugin{$this->nesting}, '{$function}')"];
+	protected function getIsCallableCode($tag, $function): string {
+		$callbackObject = "\$_smarty_tpl->smarty->registered_objects['{$tag}'][0]";
+		return "(isset({$callbackObject}) && is_callable(array({$callbackObject}, '{$function}')))";
 	}
+
+	/**
+	 * @inheritDoc
+	 */
+	protected function getFullCallbackCode($tag, $function): string {
+		$callbackObject = "\$_smarty_tpl->smarty->registered_objects['{$tag}'][0]";
+		return "{$callbackObject}->{$function}";
+	}
+
 }
diff --git a/src/Compiler/Template.php b/src/Compiler/Template.php
index 96b177c2..863b30c0 100644
--- a/src/Compiler/Template.php
+++ b/src/Compiler/Template.php
@@ -286,6 +286,10 @@ class Template extends BaseCompiler {
 	 * @var string
 	 */
 	public $postfixCompiledCode = '';
+	/**
+	 * @var ObjectMethodBlockCompiler
+	 */
+	private $objectMethodBlockCompiler;
 
 	/**
 	 * Initialize compiler
@@ -302,6 +306,8 @@ class Template extends BaseCompiler {
 			'_',
 			uniqid(mt_rand(), true)
 		);
+
+		$this->objectMethodBlockCompiler = new ObjectMethodBlockCompiler();
 	}
 
 	/**
@@ -1424,7 +1430,7 @@ class Template extends BaseCompiler {
 				|| in_array($method, $this->smarty->registered_objects[$base_tag][1]);
 
 			if ($allowedAsBlockFunction) {
-				return (new ObjectMethodBlockCompiler())->compile($args, $this, $parameter, $tag, $method);
+				return $this->objectMethodBlockCompiler->compile($args, $this, $parameter, $tag, $method);
 			} elseif ($allowedAsNormalFunction) {
 				return (new ObjectMethodCallCompiler())->compile($args, $this, $parameter, $tag, $method);
 			}
@@ -1439,7 +1445,7 @@ class Template extends BaseCompiler {
 
 		// closing tag
 		if ($allowedAsBlockFunction) {
-			return (new ObjectMethodBlockCompiler())->compile($args, $this, $parameter, $tag, $method);
+			return $this->objectMethodBlockCompiler->compile($args, $this, $parameter, $tag, $method);
 		}
 
 		$this->trigger_template_error(
diff --git a/tests/UnitTests/TemplateSource/TagTests/BlockPlugin/CompileBlockPluginTest.php b/tests/UnitTests/TemplateSource/TagTests/BlockPlugin/CompileBlockPluginTest.php
index fd2c1224..13887877 100644
--- a/tests/UnitTests/TemplateSource/TagTests/BlockPlugin/CompileBlockPluginTest.php
+++ b/tests/UnitTests/TemplateSource/TagTests/BlockPlugin/CompileBlockPluginTest.php
@@ -57,10 +57,6 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
 
     /**
      * test block plugin function definition in script
-     *
-     * @runInSeparateProcess
-     * @preserveGlobalState disabled
-     *
      */
     public function testBlockPluginRegisteredFunction()
     {
@@ -70,9 +66,6 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
 
     /**
      * test block plugin function definition in script
-     *
-     * @runInSeparateProcess
-     * @preserveGlobalState      disabled
      */
     public function testBlockPluginRegisteredFunction2()
     {
@@ -83,10 +76,6 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
 
     /**
      * test block plugin static method
-     *
-     * @runInSeparateProcess
-     * @preserveGlobalState disabled
-     *
      */
     public function testBlockPluginRegisteredStatic()
     {
@@ -96,10 +85,6 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
 
     /**
      * test block plugin static method failure
-     *
-     * @runInSeparateProcess
-     * @preserveGlobalState      disabled
-     *
      */
     public function testBlockPluginRegisteredStatic2()
     {
@@ -110,10 +95,6 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
 
     /**
      * test block plugin object method
-     *
-     * @runInSeparateProcess
-     * @preserveGlobalState disabled
-     *
      */
     public function testBlockPluginRegisteredMethod()
     {
@@ -124,9 +105,6 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
 
     /**
      * test block plugin object method failure
-     *
-     * @runInSeparateProcess
-     * @preserveGlobalState      disabled
      */
     public function testBlockPluginRegisteredMethod2()
     {
@@ -137,10 +115,6 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
 
     /**
      * test block plugin registered object
-     *
-     * @runInSeparateProcess
-     * @preserveGlobalState disabled
-     *
      */
     public function testBlockPluginRegisteredObject()
     {
@@ -151,23 +125,16 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
 
     /**
      * test block plugin registered object failure
-     *
-     * @runInSeparateProcess
-     * @preserveGlobalState      disabled
      */
     public function testBlockPluginRegisteredObject2()
     {
         $this->expectException(\Smarty\Exception::class);
-        $this->expectExceptionMessage('block tag \'myobject\' not callable');
+        $this->expectExceptionMessage('block tag \'myobject\' not callable or registered');
         $this->assertEquals('object block test', $this->smarty->fetch('registered_object.tpl'));
     }
 
     /**
      * test block plugin repeat function
-     *
-     * @runInSeparateProcess
-     * @preserveGlobalState disabled
-     *
      */
     public function testBlockPluginRepeat()
     {
@@ -176,10 +143,6 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
 
     /**
      * test block plugin repeat function with modifier
-     *
-     * @runInSeparateProcess
-     * @preserveGlobalState disabled
-     *
      */
     public function testBlockPluginRepeatModidier1()
     {
@@ -188,10 +151,6 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
 
     /**
      * test block plugin repeat function with modifier list
-     *
-     * @runInSeparateProcess
-     * @preserveGlobalState disabled
-     *
      */
     public function testBlockPluginRepeatModidier2()
     {
@@ -200,10 +159,6 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
 
     /**
      * test block plugin with no output
-     *
-     * @runInSeparateProcess
-     * @preserveGlobalState disabled
-     *
      */
     public function testBlockPluginNoOutput()
     {
@@ -212,10 +167,6 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
 
     /**
      * test nested block plugin
-     *
-     * @runInSeparateProcess
-     * @preserveGlobalState disabled
-     *
      */
     public function testBlockPluginNested()
     {
@@ -224,10 +175,6 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
 
     /**
      * test default block plugin
-     *
-     * @runInSeparateProcess
-     * @preserveGlobalState disabled
-     *
      */
     public function testBlockPluginDefault1()
     {
@@ -237,10 +184,6 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
 
     /**
      * test default block plugin
-     *
-     * @runInSeparateProcess
-     * @preserveGlobalState disabled
-     *
      */
     public function testBlockPluginDefault2()
     {
@@ -251,10 +194,7 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
     /**
      * Test caching
      *
-     * @runInSeparateProcess
-     * @preserveGlobalState disabled
      * @dataProvider        data
-     *
      */
     public function testCache($isCached,
                               $caching,
@@ -304,9 +244,7 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
     /**
      * Test spacings
      *
-     * @preserveGlobalState disabled
      * @dataProvider        dataTestSpacing
-     * @runInSeparateProcess
      */
     public function testSpacing($code, $result, $testName, $testNumber)
     {
@@ -345,9 +283,7 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
     /**
      * Test spacings
      *
-     * @preserveGlobalState disabled
      * @dataProvider        dataTestDefaultSpacing
-     * @runInSeparateProcess
      */
     public function testSpacingDefault($code, $result, $testName, $testNumber)
     {
@@ -389,9 +325,7 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
     /**
      * Test nocache block spacings
      *
-     * @preserveGlobalState disabled
      * @dataProvider        dataTestNocacheSpacing
-     * @runInSeparateProcess
      */
     public function testBlockNocache($code, $result, $testName, $testNumber)
     {
@@ -409,9 +343,7 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
     /**
      * Test nocache block spacings
      *
-     * @preserveGlobalState disabled
      * @dataProvider        dataTestNocacheSpacing
-     * @runInSeparateProcess
      */
     public function testBlockNocache2($code, $result, $testName, $testNumber)
     {
@@ -446,7 +378,7 @@ class CompileBlockPluginTest extends PHPUnit_Smarty
     }
 
 }
-function myblockplugintest($params, $content, &$smarty_tpl, &$repeat)
+function myblockplugintest($params, $content, $smarty_tpl, &$repeat)
 {
     if (!$repeat) {
         $output = str_replace('hello world', 'block test', $content);
@@ -455,7 +387,7 @@ function myblockplugintest($params, $content, &$smarty_tpl, &$repeat)
     }
 }
 
-function myblockplugintest2($params, $content, &$smarty_tpl, &$repeat)
+function myblockplugintest2($params, $content, $smarty_tpl, &$repeat)
 {
     if (!$repeat) {
         $output = str_replace('hello world', "block test{$params['var']}", $content);
@@ -466,7 +398,7 @@ function myblockplugintest2($params, $content, &$smarty_tpl, &$repeat)
 
 class myblockclass1
 {
-    static function staticfunc($params, $content, &$smarty_tpl, &$repeat)
+    static function staticfunc($params, $content, $smarty_tpl, &$repeat)
     {
         if (!$repeat) {
             $output = str_replace('hello world', 'static block test', $content);
@@ -474,7 +406,7 @@ class myblockclass1
         }
     }
 
-    public function methodfunc($params, $content, &$smarty_tpl, &$repeat)
+    public function methodfunc($params, $content, $smarty_tpl, &$repeat)
     {
         if (!$repeat) {
             $output = str_replace('hello world', 'method block test', $content);
@@ -482,7 +414,7 @@ class myblockclass1
         }
     }
 
-    public function objectfunc($params, $content, &$smarty_tpl, &$repeat)
+    public function objectfunc($params, $content, $smarty_tpl, &$repeat)
     {
         if (!$repeat) {
             $output = str_replace('hello world', 'object block test', $content);