QtCreator crashes when selecting elements to align in Model Editor

The Model Editor crashes QtCreator when you click on antoher class, while two classes are selected and were aligned.

See attached Movie for preparation.

To have a multi selection 'Ctrl' was pressed while clicking on the second class.

To crash QtCreator:

After alignment of the two selected classes mouse click (without pressing any key/modifier) on the third (not selected) class => CRASH.