diff --git a/share/qtcreator/qmldesigner/propertyEditorQmlSources/Qt5HelperWindow.qml b/share/qtcreator/qmldesigner/propertyEditorQmlSources/Qt5HelperWindow.qml
new file mode 100644
index 00000000000..a2232b13da5
--- /dev/null
+++ b/share/qtcreator/qmldesigner/propertyEditorQmlSources/Qt5HelperWindow.qml
@@ -0,0 +1,4 @@
+import QtQuick.Window 2.15
+
+Window {
+}
diff --git a/share/qtcreator/qmldesigner/propertyEditorQmlSources/Qt6HelperWindow.qml b/share/qtcreator/qmldesigner/propertyEditorQmlSources/Qt6HelperWindow.qml
new file mode 100644
index 00000000000..448a7575a47
--- /dev/null
+++ b/share/qtcreator/qmldesigner/propertyEditorQmlSources/Qt6HelperWindow.qml
@@ -0,0 +1,4 @@
+import QtQuick 2.15
+
+Window {
+}
diff --git a/share/qtcreator/qmldesigner/propertyEditorQmlSources/imports/HelperWidgets/ColorEditor.qml b/share/qtcreator/qmldesigner/propertyEditorQmlSources/imports/HelperWidgets/ColorEditor.qml
index d621fcb0cf5..722338ac1dd 100644
--- a/share/qtcreator/qmldesigner/propertyEditorQmlSources/imports/HelperWidgets/ColorEditor.qml
+++ b/share/qtcreator/qmldesigner/propertyEditorQmlSources/imports/HelperWidgets/ColorEditor.qml
@@ -26,7 +26,6 @@
 import QtQuick 2.1
 import QtQuick.Layouts 1.0
 import QtQuickDesignerTheme 1.0
-import QtQuick.Dialogs 1.3
 import StudioTheme 1.0 as StudioTheme
 import StudioControls 1.0 as StudioControls
 
@@ -559,12 +558,13 @@ Column {
                         }
                     }
 
-                    onApply: {
+                    onApplied : {
                         if (presetList.gradientData.stopsCount > 0) {
                             applyPreset();
                         }
                     }
 
+
                     onSaved: {
                         gradientLine.savePreset();
                         presetList.updatePresets();
@@ -588,7 +588,7 @@ Column {
                 MouseArea {
                     anchors.fill: parent
                     onClicked: {
-                        presetList.open()
+                        presetList.show()
                     }
                 }
             }
diff --git a/share/qtcreator/qmldesigner/propertyEditorQmlSources/imports/HelperWidgets/GradientPresetList.qml b/share/qtcreator/qmldesigner/propertyEditorQmlSources/imports/HelperWidgets/GradientPresetList.qml
index aa96c2fb77b..fb2ca5e41d2 100644
--- a/share/qtcreator/qmldesigner/propertyEditorQmlSources/imports/HelperWidgets/GradientPresetList.qml
+++ b/share/qtcreator/qmldesigner/propertyEditorQmlSources/imports/HelperWidgets/GradientPresetList.qml
@@ -25,19 +25,22 @@
 
 import QtQuick 2.15
 import QtQuick.Layouts 1.15
-import QtQuick.Dialogs 1.3
+import Qt.labs.platform 1.1
 import QtQuickDesignerTheme 1.0
 import HelperWidgets 2.0
 import StudioControls 1.0 as StudioControls
 import StudioTheme 1.0 as StudioTheme
 
-Dialog {
+
+HelperWindow {
     id: dialogWindow
     width: 1200
     height: 650
     title: qsTr("Gradient Picker")
 
     signal saved
+    signal applied
+    signal accepted
     property alias gradientData: gradientPickerData
 
 
@@ -62,8 +65,6 @@ Dialog {
     GradientPresetDefaultListModel { id: defaultPresetListModel }
     GradientPresetCustomListModel { id: customPresetListModel }
 
-    standardButtons: Dialog.NoButton
-
     Rectangle {
         anchors.fill: parent
         anchors.margins: -12
@@ -117,7 +118,7 @@ Dialog {
                         id: deleteDialog
                         visible: false
                         modality: Qt.WindowModal
-                        standardButtons: Dialog.No | Dialog.Yes
+                         buttons: StandardButton.No | StandardButton.Yes
                         title: qsTr("Delete preset?")
                         text: qsTr("Are you sure you want to delete this preset?")
                         onAccepted: customPresetListModel.deletePreset(customTabContent.deleteId)
@@ -129,9 +130,9 @@ Dialog {
                 Layout.alignment: Qt.AlignBottom | Qt.AlignRight
                 Layout.topMargin: 5
 
-                Button { id: buttonClose; text: qsTr("Close"); onClicked: { dialogWindow.reject(); } }
+                Button { id: buttonClose; text: qsTr("Close"); onClicked: { dialogWindow.hide(); } }
                 Button { id: buttonSave; text: qsTr("Save"); onClicked: { dialogWindow.saved(); } }
-                Button { id: buttonApply; text: qsTr("Apply"); onClicked: { dialogWindow.apply(); } }
+                Button { id: buttonApply; text: qsTr("Apply"); onClicked: { dialogWindow.applied(); dialogWindow.hide(); } }
             }
         }
     }
diff --git a/src/plugins/qmldesigner/components/propertyeditor/quick2propertyeditorview.cpp b/src/plugins/qmldesigner/components/propertyeditor/quick2propertyeditorview.cpp
index 92ac7fdf8f1..70b7ce76df4 100644
--- a/src/plugins/qmldesigner/components/propertyeditor/quick2propertyeditorview.cpp
+++ b/src/plugins/qmldesigner/components/propertyeditor/quick2propertyeditorview.cpp
@@ -72,11 +72,22 @@ void Quick2PropertyEditorView::registerQmlTypes()
         Tooltip::registerDeclarativeType();
         EasingCurveEditor::registerDeclarativeType();
         RichTextEditorProxy::registerDeclarativeType();
-        QUrl regExpUrl = QUrl::fromLocalFile(PropertyEditorQmlBackend::propertyEditorResourcesPath()
-                                             + "/RegExpValidator.qml");
+
+        const QString resourcePath = PropertyEditorQmlBackend::propertyEditorResourcesPath();
+
 #if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+        QUrl regExpUrl = QUrl::fromLocalFile(resourcePath + "/RegExpValidator.qml");
         qmlRegisterType(regExpUrl, "HelperWidgets", 2, 0, "RegExpValidator");
+
+        const QString qtPrefix = "/Qt6";
+#else
+        const QString qtPrefix = "/Qt5";
 #endif
+        qmlRegisterType(QUrl::fromLocalFile(resourcePath + qtPrefix + "HelperWindow.qml"),
+                        "HelperWidgets",
+                        2,
+                        0,
+                        "HelperWindow");
     }
 }