Please describe the problem:
When entering fullscreen, there is no way to leave it a get back to window.

Steps to reproduce:
1. Open Five or more
2. enter fullscreen - works ok
3. click "leave fullscreen - F11" or press F11 - still in fullscreen


Actual results:
Game is still in fulscreen 

Expected results:
I expect to get to the window mode. (For example in Chess it does work good)

Does this happen every time?
Did not managed to get back - even quitting the game and then starting again does not help.

Other information:
It is possible to switch to another window via Alt+Tab, but the game is still fullscreen under the top window.
On the bottom taskbar is possible to choose Minimize/ Unminimize, which works good, so the game is minimized or fullscreen again.

Maximize, Move, Resize are gray and unclickable.

Sometimes after try to leave fullscreen the screen little "jumps" maybe as if the content was redrawn to big window and imediatelly resized to fullscreen, but it can be illusion or problem with slow computer and old graphic card.


The game Chess works fine, so this should not be problem with Gnome itself.

The version from About dialog is "Five or More 2.20.1"
(I am using Gentoo, but it should be unrelated, I can post more info, if it is needed)

(Maybe it is related to menu item not correctly assigned? I do not know.)