Troubles with multiple QtQuick imports

Currently, the default QtQuick import is 2.12. Adding a view3D will add an import of QtQuick 2.15 without removing the older QtQuick import, see attached picture. Manually removing the 2.12 import will lead to errors.

Steps to test:

• Create a project
• Import Quick3D
• Add view3D
• Check the QML imports -> both QtQuick 2.12 and QtQtuick 2.15 are found.
• QtQuick2.12 import is allowed to be removed manually by clicking the x icon beside it in the QML imports tab. If done so, it will remove Text item from the navigator and the Form Editor does not look correct anymore, see attached picture.
• If live preview button is then pressed and changes are saved, also QtQuick 2.15 import is removed and Library and Navigator views come unresponsive.