QtCreator Crash after open Designer

milad2014

hello guys!
i updated Qt 5.15.1 to 6.4.1 (GCC 10.3.1) and The host in Ubuntu on virtual Machine VMwarePro 17
so... every thing seems ok until when i wanna to use ListElement under ListModel componnet
i run qt with terminal and i created a simple qtquick project As below :

import QtQuick

Window{
    width: 600
    height: 400
    ListModel {
        ListElement {
            name: "Apple"
            cost: 2.45
        }
    }
}

and when i clicked on Design mode button(Ctrl+4) ,Qt Creator will be crash and close and i got this messages in terminal for debug:
$./qtcreator

addOverrideAction /Switch to <b>Welcome</b> mode: Action /Switch to <b>Welcome</b> mode is already registered for context Global Context.
Info: creating stash file /home/milad/build-TestDesigner-Desktop_Qt_6_4_1_GCC_64bit-Debug/.qmake.stash
file:///home/milad/Qt/Tools/QtCreator/share/qtcreator/qmldesigner/propertyEditorQmlSources/imports/StudioControls/MenuItem.qml:68:9: TypeError: Cannot read property 'width' of null
file:///home/milad/Qt/Tools/QtCreator/share/qtcreator/qmldesigner/materialBrowserQmlSource/MaterialBundleContextMenu.qml:69: TypeError: Cannot read property 'bundleMaterialImported' of null
Segmentation fault (core dumped)

after that i tried so many ways for fix it , but didn't work
i did reinstalled the ubuntu22.04, qt 6.0.0 , qt 6.2 , qt 6.4 ... and so on...
i installed qt5 and qt6 dependencies
i updated everything that imagine
NOTHING HAPPENDED and still i have the same problem with designer on listelement
but when i remove the ListElement like below:

import QtQuick

Window{
    width: 600
    height: 400
    ListModel {
    }
}

and when i click on design button on QtCreator everything work fine again!!!!! why?!
for be sure i edited this file:
file:///home/milad/Qt/Tools/QtCreator/share/qtcreator/qmldesigner/materialBrowserQmlSource/MaterialBundleContextMenu.qml:69: TypeError: Cannot read property 'bundleMaterialImported' of null
and changed the bundleMaterialImported from null to 0 , error message disappeared but i have the same problem and the qt crash and exit immediately after open design menu
i need HELP guys i am broken right now and i haven't any idea for fixing that!
QT company please dont update the version When having bugs.
sorry for bad english too guys!

jofernito

I have the same problem in windows 10 with QTCreator 9.0.1 and QT 6.2.4 LTS.

Giox79

Same issue, updating to QtCreator 9.0.1 generate this kind of issue as soon as defining a ListElement.
Any help will be appreciated.