283413 - Marquee scrolling "jumps" when starting/stopping

Status: RESOLVED DUPLICATE of bug 53007

(Core :: Layout, defect)

Description

[Fapiko]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0

When controlling a marquee by using the onMouseOver and onMouseOut properties,
it will "jump" when you go over text. For example:
<marquee scrolldirection="down" onMouseOver="this.stop()"
onMouseOut="this.start()">Scroll<br>Stuff<br>Here<br></marquee>

If you move the mouse into the marquee, it stops as it should. When moving the
mouse out of the marquee, it also starts as it should. When the mouse is already
in the marquee and it has stopped, and you move it over any text or images in
the marquee, it will jump before it stops. This really screws up my shoutbox,
because the only way to see the date/time a user posted is to hover on the clock
by the post. If you attempt to attack it from the top and you move the mouse to
slowly, it just keeps jumping away from you and you never end up getting it :x

Reproducible: Always

Steps to Reproduce:
1. Create a marquee element with the tags onMouseOver="this.stop()" and
onMouseOut="this.start()"
2. Throw a bit of text into the marquee and have the scroll direction go up or down.
3. Move your mouse over the text.

Actual Results:  
The marquee "jumps" forward, often times off the mouse and will jump again as
soon as the mouse hovers over the text.

Expected Results:  
The text in the marquee should stay still and not move.

Comment 1

[Martijn Wargers (dead)]

Interesting problem. I think this is basically the same issue as bug 53007.
Reporter, if you agree, I'll make it a duplicate of that.

Comment 2

[Fapiko]

Yea, it does appear to be a dupe. I hadn't really tested the events with
anything but marquee.

Comment 3

[Martijn Wargers (dead)]

Ok, marking duplicate then

*** This bug has been marked as a duplicate of 53007 ***