WebPositive: when opening animation image (gif or webp), animation is not started sometimes

[X512]

This is hrev53815.

Steps to reproduce:

1. Open ​https://upload.wikimedia.org/wikipedia/commons/9/9b/Geneva_mechanism_6spoke_animation.gif.
2. Animation is not playing.

[bruno]

I just tried to open it with Haiku hrev53806 32Bit... and it is working! Animation is playing!

32bit hrev53815 the animation will not play! Refresh will make it work...

[X512]

Replying to bruno:

I just tried to open it with Haiku hrev53806 32Bit... and it is working! Animation is playing!

Try close and open multiple times.

[bruno]

ah ok if it does not play a refresh will work... sometimes it will start imediately sometimes the animation will not play... should be investigated anyway...

[ttcoder]

After installing beta2 I'm keeping up my all-round testing, and.... I'm now seeing this bug. For some reason it had never ever occured in any previous hrev I've used.

Doing a right-click for "open in new window" (which opens in a new.. tab :-) actually produces a working instance of the GIF sometimes (testing with the above example link) though I generally have to use that trick 5 times in a row or more for it to work. Interesting little bug.

EDIT: interesting! Listen to this: when on a working (tab) instance, if I select another tab (e.g. of a non-working gif), then go back to the (previously working) tab, it no longer works, it's stopped at the last frame it had drawn.

[humdinger]

On hrev56578+46, 64bit, HaikuWebKit 1.9.1, all animated GIFs I've happened on so far do work. Including the one linked on this ticket and the S&T pages of the QuickTour.

Only if you change tabs, it won't still run when you switch back. You have to reload the page to get it running again. I suppose it should pause when switching tabs and un-pause when you're back, but this ticket seems to be fixed.