> Hi botond i was testing a little with 53.0a1 (2017-01-23) (32-bit)... I found > that the bug i told you before get worse when the web page has a fixed > background image...it seems that FF is trying to calcute or paint the fixed > background when its not needed. > > A few days ago i was comparing scrolling on M.S. Edge and FF and i realize > that if the web page has no fixed background image both perform exactly, with > an acceptable delay on painting, but if the web page has a fixed background > image, firefox shows glitches on that background image that Edge doesn't. > > Example: http://www.localstrike.net/foros/ ... try to scroll fast and later > use firefox's dev tools to remove the fixed attribute from the background > image it works good exactly like M.S. Edge.
I do see checkerboarding on that page when dragging the scrollbar quickly. While the checkerboarding itself is expected (bug 1251617), the fact that the checkerboarding extends to the fixed background image is not expected. I filed bug 1333965 [1] about this. However, for me, making the background image not fixed does not improve the behaviour. Just to be sure: are you scrolling by dragging the scrollbar? Thanks, Botond [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1333965 _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
