QDS crashes when trying to drag-and-drop Material Editor to a specific position

See the video for better explanation:

qtdesignstudio_yVKNzqL6oZ.mp4

When user tries to drag-and-drop Material Editor -window to the top-right of the main window, the program seems to crash.

EDIT: It seems, that if I delete all QDS related data from C:\Users\vivarank\AppData\Roaming\QtProject, the crash won't happen for a while. But after a while the crash starts to reappear.