871300 - Some elements aren't rendered until scroll or other interaction

Status: RESOLVED DUPLICATE of bug 858137

(Firefox for Android Graveyard :: Toolbar, defect)

Description

[Marco Castelluccio [:marco]]

I can reproduce the bug on some websites with a dropdown menu, if I click on the menu link, the height of the page is updated (because the scrollbar becomes longer), but the menu isn't rendered until I scroll. An affected website is https://addons.mozilla.org/it/android/extensions/?sort=created (the menu that allows you to sort the extensions).

An obvious example of this problem is the attached image. The GIF image is animated only when I zoom and scroll. If I don't do anything, the animation is frozen. While I zoom and scroll, some frames of the animation are rendered.

Sometimes it happens for an entire website, and to force a redraw of the content, I must open the awesomescreen (but I can't find STR for this case).

My device is a Samsung Galaxy S 2 with ICS.

Comment 1

[Marco Castelluccio [:marco]]

Same problem for the website in bug 795595. If I start a new game, the pong ball moves only if I zoom/scroll.

Comment 2

[Marco Castelluccio [:marco]]

Attachment: Image

Comment 3

[Aaron Train [:aaronmt]]

(In reply to Marco Castelluccio [:marco] from comment #0)
> An obvious example of this problem is the attached image. The GIF image is
> animated only when I zoom and scroll. If I don't do anything, the animation
> is frozen. While I zoom and scroll, some frames of the animation are
> rendered.

Is this not a duplicate of bug 858137

Comment 4

[Marco Castelluccio [:marco]]

(In reply to Aaron Train [:aaronmt] from comment #3)
> (In reply to Marco Castelluccio [:marco] from comment #0)
> > An obvious example of this problem is the attached image. The GIF image is
> > animated only when I zoom and scroll. If I don't do anything, the animation
> > is frozen. While I zoom and scroll, some frames of the animation are
> > rendered.
> 
> Is this not a duplicate of bug 858137

Probably yes, but the problem isn't restricted to GIF images. See, for example, the URL in bug 795595.

Comment 5

[Kartikaya Gupta (email:[e-mail])]

I'm going to dupe this to bug 858137 and expand the scope of that bug to include non-GIF elements too.