User Agent: Mozilla/5.0 (X11; Linux i686; rv:15.0) Gecko/15.0 Firefox/15.0a1 Build ID: 20120516124200 Steps to reproduce: I clicked the inspect button in the Tools > Web Developer menu and switched to another tab (where the inspector isn't present). Actual results: When I looked in the menu again, the tick was still there. When I clicked it, the inspector opened in the tab and the tick remained. The tick only disappeared when I clicked it again, so only when the inspector disappears somewhere the tick disappears. The tick reappears only when you either open another inspector or _look_ in the menu where there is an inspector. Expected results: The tick should only be visible if the tab which you are in has an inspector present.
It works fine for me on the latest nightly (2 Jun 2012). Could you verify that it is fixed?
Sorry, thought I had closed this the minute I had posted it :)