Checkbox in ListView : Object or context destroyed during incubation

ebatsin

Hi !

I am instancing a CheckBox with a custom indicator as a delegate of a ListView and I get the following errors :

QML Component: Cannot create delegate
Object or context destroyed during incubation

My code looks something like this :

ListView {
    delegate: RowLayout {
        // some stuff & items

        CustomCheckbox { } // if I remove this, everything works fine
}

CustomCheckBox.qml :

CheckBox {
    indicator: Rectangle { } // If I do not use a custom indicator, everything works fine
}

It seems to be this bug : https://bugreports.qt.io/browse/QTBUG-50992 but it is closed.

I am using Qt5.12.1 on Arch Linux.
Am I doing something wrong or is this the bug mentioned earlier. If it is, how can I ask for the bug to be reopened ?