Run apprunner, with the current default url. Page is too wide to fit in normal window width, so horizontal-scroll right to see the other part of the page -- on Linux, the white background isn't drawn for the right part of the page. Not a problem on Windows.

Is this is a duplicate of bug #6634? Here's the screenshot posted there. http://bugzilla.mozilla.org/showattachment.cgi?attach_id=207 However, they may both be ultimately a bug with the TABLE COLSPAN code, which is bug #6404 (although that one has a different 'flavour' -- columns magically "collapse").

yes, i see it. i wonder what broke, it used to work. marking m7.

Yes, that screenshot is exactly what I'm seeing; this bug must be a dup of that one.

m10

I think this problem might be that the clip region for the rendering context that draws the background is set only to the visible area. So, when you scroll horizontally (and gtk physically moves the widget to the left) the rendering area remains the visible area - except offseted to the right.

*** Bug 3017 has been marked as a duplicate of this bug. ***

I just tried it and it works now. marking worksforme.

Wit the Sept 2 build, this problem is not occuring.