Created attachment 8703674 [details] Can't run tasks.gif User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:42.0) Gecko/20100101 Firefox/42.0 Build ID: 20151029151421 Steps to reproduce: I created an animated GIF that's supposed to repeat once (loop: 2). Actual results: While the GIF is played back correctly in IE, Firefox only plays it once, although the animation should be played back twice. Expected results: The animated GIF (see attachment) should be correctly played back twice.
I tried an old version, FF8, and the gif has only one run too. So old issue maybe.
Reproduced in Firefox, works as expected in Chrome.
:seth, can you comment to the bug?
I think this is a dupe bug 1255497. If not please re-open.
Interesting argumentation in the referenced Chromium thread ... Well, yes, you could perfectly argue that way. I feel using the word "loop" has been a bad decision. "Rewind", "Replay" or similar would have been a better choice. But it's too late now to argue on that.