In some conditions, images disappears like in attachment animation gif(In the attachment, disappeared images must be always rendered). I encountered the problem only in Japanese browser game at now. (need public site or simple test case...) regression range(mozilla inbound): Last OK :1e5f3d1151d6 First NG:af5c9cf6898b Regression of Bug 1210560

Hrm, this requires some form of reduced test case or example website to solve I expect.

Yamada, can you please provide a reduced testcase for this bug?

I'm still investigating the problem... The page on which I encountered problem has complicated structure, so it is difficult to obtain the working copy... The problem is very confused. As far as I test through inspector, *The problem is a little bit　different from what I thought. Images are rendered, but some or most part are cut. (this behavior seems to depend on window size and so on) *Images could be rendered normally by changing the width of images... (So, animation is one of triggers of the problem...) I'll try more investigation or find other cases...

Oops, forgot one more result. *Without animation, images rendered normally (So, animation is one of triggers of the problem...)

Unfortunately, I can't construct a test case. But as far as I tested, a patch for bug 1227210 fixes my problem too. So, we can treat this as dupe of 1227210.

(In reply to Toshihiro Yamada from comment #5) > Unfortunately, I can't construct a test case. > But as far as I tested, a patch for bug 1227210 fixes my problem too. > So, we can treat this as dupe of 1227210. Done. Thanks for following up.