Delete Keyboard Key removes Connections

Clicking DELETE key in most widgets in Design View very often ends in removal of a row in Connections View Widget. To activate that, first click anywhere in Connections View Widget, and you will notice that "remove" button after that is almost always colored as in focus/activated, clicking "del" will trigger removal. 

Also, tapping DELETE when item is selected in Navigator doesn't remove the item, but sends the next message in debug output:

QAction::event: Ambiguous shortcut overload: Del