631821 - Background window content painting and flickering over foreground window after switching spaced

Status: RESOLVED INCOMPLETE

(Core :: Graphics, defect)

Description

[Dave Townsend [:mossop]]

Attachment: screenshot

Saw this for the first time this morning but I'm using the nightly from Feb 2nd.

I started a couple of downloads and then switched to a different space, when switching back the main browser window appeared to be in the foreground but the window content of the downloads window was being painted on top of it and kept flickering like it was redrawing the main window then redrawing the downloads window on top.

Managed to reproduce it a couple of times.

Comment 1

[Joe Drew (not getting mail)]

Without any other examples or steps to reproduce (I can't), unfortunately this bug won't go anywhere. :(

Comment 2

[Dimitri Saltanov]

Attachment: Same thing, happens every day on my computer (win XP, Firefox 8-13)

Comment 3

[Dimitri Saltanov]

I have this problem just about every day on windows XP. 

The inner contents of Firefox background windows and dialogs get painted all over the place on my main winXP computer very frequently. And I mean not only over foreground Firefox windows, but over anything else as well. This is dependent on visual activity in those Firefox windows. It is not exactly "reproducible", but once this starts to happen, it just can't be stopped aside from minimizing all background Firefox windows and dialogs, or even closing them for good! Everything gets garbled with pieces of web pages and/or controls and needs to be refreshed one way or another. Firefox just paints everything it deems desirable over foreground applications and the taskbar. For every bit of visual change, it dumps the whole window contents (without borders) onto the victim foreground application window and continues to render itself as if it were in foreground now (despite input focus still being with the *actual* foreground application).

Please reopen this bug, it really represents a major offense from Firefox toward the whole "ecosystem" and is annoying beyond any other problems with Firefox I ever experienced. (It's actually so severe I didn't even care to file a bug for a few months since some Nightly when it first hit me, because I thought such a huge monster bug just couldn't escape undetected from Mozilla.)