lyx crashes while menu navigating to the left

[V K]

I think, I've found a bug.
Steps to reproduce: navigate through menus with keyboard (arrows), let's say, menu Navigate, go deeper into sub-menu (Bookmarks – Save Bookmark 1) and if there will be no more sub-menu in the left but you press left arrow Lyx crashes and after relaunching there is no documents from last session. If you go right with arrow, this opens right to the active menu. If you go to the left from menu item that hasn't sub menu (let's say, Navigate – Next Note), Lyx is not crashing and that opens next to the left menu.

Best regards, 

Valdemaras