Created attachment 8536475 [details] firefox_empty_window_menu.jpg User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:34.0) Gecko/20100101 Firefox/34.0 Build ID: 20141126041045 Steps to reproduce: I just opened up 2 Windows in one Window ( window 1 ) i have a few Tabs obened, in the other one ( window 2 ) i also had a few tabs oben and a new empty tab. i switched to window 1 and then i selected Window in the Menu and there were no Entries of the Windows Actual results: The Windows in the Menu->Window were net listed Expected results: That the 2 Windows were listed in the Menu.
This bug does not seem to reproduce easily; It's not always the case. For me, it often happens when I minimize all windows to the dock. I have found a workaround which involves simple changing windows, un-minimizing, or similar. Sounds like there's an exception in the populating function for this window which causes the function to exit without completing its task. Seems new in 34. Using 34.0.5 under OSX.6.8
> i switched to window 1 How do you "switch to window 1" -- do you just click on its titlebar?