1256131 - Rendering does not work well in Mac OS X 10.6.8 on VirtualBox if main-window was expanded after get out of the screen partially

Status: RESOLVED DUPLICATE of bug 1256576

(Core :: Graphics: Layers, defect)

Description

[magicp]

Attachment: steps to reproduce.mp4

User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:48.0) Gecko/20100101 Firefox/48.0
Build ID: 20160312030405

Steps to reproduce:

1. Start Nightly or Aurora in Mac OS X 10.6.8 on VirtualBox
2. Get out main-window to left side of the screen partially
3. Expand main-window to right side 


Actual results:

Rendering does not work well. Reproduce with...
- e10s on/off
- Hardware acceleration on/off


Expected results:

Rendering works well.

Comment 1

[Jamie Nicol [:jnicol]]

Thanks for the report. As this only affects 47 onwards so appears to be a regression, it would be really useful if you were able to find a regression window using the mozregression tool - https://mozilla.github.io/mozregression/. Would you be able to do that?

Comment 2

[magicp]

I tried to install mozregression, but I got some errors and failed.

Comment 3

[Jamie Nicol [:jnicol]]

If you have the time and are willing to try again we could help you try to overcome the errors, post them either here or on irc (I think the #ateam channel would be the best place for help, or you could find me on #gfx). 

Otherwise, does anyone have an OS X virtualbox vm and is able to reproduce?

Comment 4

[Ryan VanderMeulen [:RyanVM]]

Sounds similar to bug 1187322.

Comment 5

[Markus Stange [:mstange]]

And especially to bug 1238753. I thought this would be fixed.

Comment 6

[magicp]

I could confirm regression range.

https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=15b761835183778c29def19e8f8136d0b1e95d57&tochange=456ca897229f57deee86b41f3658d97249f2d668

Comment 7

[Markus Stange [:mstange]]

Thanks! That means it will be fixed by bug 1256576.