User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b5) Gecko/20100101 Firefox/4.0b5 Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b5) Gecko/20100101 Firefox/4.0b5 The aero on firefox breaks from time to time. It has happened to me on two different machines (both Windows 7 64bit). It doesn't always break for the same reason, but I have figured out a way which I think quite consistently breaks it. This has happened to me before Beta5 too, I think it has happened since the first beta. It happens both with HW-acceleration enabled and disabled. Reproducible: Always Steps to Reproduce: 1. Maximize Firefox 2. Connect/disconnect external monitor (probably works with resolution change too) Actual Results: The aero theme is now broken, see screenshot.
Also, if I open a new window, that window will have working aero. See the screenshot, it shows two windows side by side, one broken and one working.
This is almost certainly a dup of bug 545892, but we can check again when that's fixed. FWIW, I see this all the time also.
This may be fixed in tomorrow's nightly. I can't confirm however as I've not been able to reproduce.
Does that pieces of bug https://bugzilla.mozilla.org/show_bug.cgi?id=545892 whit was landed fixed THIS bug?
This should be fixed by the landings in bug 545892. Please reopen if you can reproduce in 10/28+ nightlies.
This is happening in Firefox 5 now...