[Webkit-unassigned] [Bug 171161] [GTK] 2.16.1 regression in drawing pages

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=171161

--- Comment #11 from Miguel Gomez <magomez at igalia.com> ---
I've been playing with a test page ManDay sent me and I can easily reproduce a crash in the web process with it.
I've looked a bit into it and I found that it's related to entering AC mode on demand. When loading the page, AC mode gets enabled. If the window is made bigger, the browser will exit AC mode, and if the window is made smaller again the browser will try to enter AC mode again and crash. I'll keep investigating.

The crash can be avoided by using WEBKIT_DISABLE_COMPOSITING_MODE=1 or WEBKIT_FORCE_COMPOSITING_MODE=1, as both vars disable on demand AC.

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