Bridge won't quit with shortcut ⌘+Q

I've had this problem some time now, but I could never reproduce the error. It was as if Bridge never able to quit using the shortcut ⌘+Q.

All other CC apps simply quit using the same shortcut command+q, except for Bridge. It doesn't seem to recognize it (although it is a default shortcut and present in the menu next to the Quit command).

I just discovered the cause of the problem: Bridge quits perfectly through the shortcut, until you hide the app. From that moment on the shortcut ⌘+Q won't work anymore - you have to use the menu to quit the app.

Anyone else has this problem? Any idea to what it might be related?