The dialogs in qtquickcontrols have support for platforms without MultipleWindows: it will refrain from creating new windows in this case and use an item in the existing scene instead. This makes the dialogs working on embedded devices (eglfs).

The rest of the controls have no such support however: Menus in particular always create a new QQuickWindow which immediately aborts the application. Tooltips will not show up at all.

Should this be addressed, or this is an intentional limitation?