User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:32.0) Gecko/20100101 Firefox/32.0 Build ID: 20140825202822 Steps to reproduce: opened a new tab Actual results: image gets repeated accross tab bar, closing it mages ghosts appear Expected results: tab should have closed and image gone

Could you type about:support and paste the section 'graphics' here.

Graphics Adapter Description Intel(R) HD Graphics 4600 Adapter Description (GPU #2) NVIDIA GeForce GT 750M Adapter Drivers igdumdim64 igd10iumd64 igd10iumd64 igdumdim32 igd10iumd32 igd10iumd32 Adapter Drivers (GPU #2) nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um Adapter RAM Unknown Adapter RAM (GPU #2) 2048 ClearType Parameters Gamma: 2200 Pixel Structure: R ClearType Level: 0 Enhanced Contrast: 200 Device ID 0x0416 Device ID (GPU #2) 0x0fe4 Direct2D Enabled true DirectWrite Enabled true (6.3.9600.17111) Driver Date 5-17-2014 Driver Date (GPU #2) 7-2-2014 Driver Version 10.18.10.3621 Driver Version (GPU #2) 9.18.13.4052 GPU #2 Active false GPU Accelerated Windows 1/1 Direct3D 10 Vendor ID 0x8086 Vendor ID (GPU #2) 0x10de WebGL Renderer Google Inc. -- ANGLE (Intel(R) HD Graphics 4600 Direct3D9Ex vs_3_0 ps_3_0) windowLayerManagerRemote false AzureCanvasBackend direct2d AzureContentBackend direct2d AzureFallbackCanvasBackend cairo AzureSkiaAccelerated 0

Could you make a try with HWA disabled to know if you're able to reproduce it, please. https://support.mozilla.org/en-US/kb/forum-response-disable-hardware-acceleration

Same results with HWA disabled

Milan, is this a dupe of bug 1040187 ? If so, can we get the relevant patch(es) uplifted to 33, perhaps? :-(

It is possible, but bug 1040187 was going away with HWA disabled, where this one is not. We don't have that fix at Beta yet, but we do have it on Nightly and Aurora. Mike - we appreciate all the help you've been giving us in tracing this - any chance you can try with Firefox Aurora and see if the problem goes away?

Downloading now. For what it's worth, the icon looks cool. I'll let you know shortly.

So maybe this may be my bad. I use WindowBlinds and when I first saw the issue, I told Windowblinds to exclude firefox from being skinned. As I hadn't changed or updated Windowblinds, I assumed it was something with Firefox. I tried a couple other things and it was still occurring, however I hadn't tried completely unloading Windowblinds. With Windowblinds completly unloaded, both Firefox and Aurora work fine. With Windowblinds enabled, Aurora works fine, but Firefox has the graphical issue still.

Did you see these graphic glitches with the previous versions of Firefox?

No, it started with this version.

Maybe a possible regression in the code of FF32. As you are able to reproduce the issue on your machine, could you install the tool mozregression (see http://mozilla.github.io/mozregression/ for details) and post here the regression range you find (console output)? Be sure each Nightly downloaded and launched by mozregression is not excluded from Windowblinds. FF32 nightlies started in May 2014 (2014-05-01).

No more inbounds to bisect Last good revision: a58872df7e34 First bad revision: 4623a4cfe024 Pushlog: https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=a58872 df7e34&tochange=4623a4cfe024 Also note, I've found that the issue only occurs when the window is maximized. When it's not it works fine, even with the current version of Firefox.

Thanks for the regression range, it's helpful. I believe the suspected bug is: Dão Gottwald — Bug 1008424 - Remove unintended gradient from the tab toolbar's background. r=mconley,jjmathies

(In reply to Mike from comment #8) > With Windowblinds > enabled, Aurora works fine, but Firefox has the graphical issue still. Sounds like we can close this bug.