223868 - Loop-once animated gifs don't play; go directly to last frame

Status: RESOLVED FIXED

(SeaMonkey :: General, defect)

Description

[rrusick]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.3.1) Gecko/20030425
Build Identifier: 

Worked in Mozilla 1.3.1 (on Win2K at least)
Doesn't work in Mozilla 1.4 or 1.5 on Win XP.

Using java rollovers with animated gifs.
Gifs which are designed to loop play as expected.

Gifs which are designed to play only once as the mouse rolls over,
do not animate at all, but go directly to the last frame.

This still works with Mozilla 1.3.1 on my Win 2K system.
Does not work on XP system with Moz 1.4, nor 1.5

This is on an internal site;
unfortunately I cannot link you to the document.

Reproducible: Always

Steps to Reproduce:
1.
2.
3.

Comment 1

[Boris Zbarsky [:bzbarsky]]

The problem is that the image starts animating when we load it, not when we
display it (this is a change from 1.3).  This is basically bug 210001.

A testcase (even attaching such an image to this bug) would be helpful.

Comment 2

[Andreas Kunz]

Attachment: animated gif that should play once

Ok, this is for testing.
This gif should play exactly once (well: probably, bug 222176 comment # 5
indicates that it is a bit difficult to determine how often a gif should play).

However, it surely should play _at least_ once and it does not (it does on
reload).

Comment 3

[Andreas Kunz]

I think this bug can be confirmed now, happens with the attachment. NS7.1 does
not have this bug and is based on 1.4 (no?), so it seems to be the same problem
(although the description is about gifs animated on mouseover).

Comment 4

[Boris Zbarsky [:bzbarsky]]

Fixed by patch in bug 210001