do the following: - open 2 browser windows - open the mail and newsgroups window - go to your bug mail - click on a mail to see it's content - click on the link to the bug - bring the second browser window in foregorund while the bug is loading in the first browser window and put it aside so you can click on it if it gets covered by th first window (you need to see a part of the window's top bar) - wait for the first window to finish loading: it will come in the foreground - now click on the second borwser window's top bar (while is covered by the first) and drag around Result: the second window moves behind the first window, when you release the button it comes in the foreground Expected: the window comes first in foreground There are bug 56690 and bug 125742 that might be related issues but this one is still a distinct bug

Isn't that bug 134317 ?

yes it is somehow, still this one is about dragging the window in the background, well a dependecy is to be marked, maybe so the other one will get fixed sooner (however i used the search words "window foreground" and missed the previous bug, that one shall contain "browser window" or "background window" instead of "mozilla")

-> event handling, but probably a dup of bug 130671.

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