215090 - scrolling triggered too many times when hitting large resized image

Status: RESOLVED WORKSFORME

(Firefox :: General, defect)

Description

[Jeremy M. Dolan]

load http://www.nycwireless.net/poe/
scroll to the end, hit page up twice
upon the second press, Firebird scrolls up excessively. On my p2 266, it pages
up all the way to the top of the page. On another users AMD Athlon XP2000+ it
scrolls up "about 25 lines extra"

The first rendering of that area takes much longer to display. It's a GIF wiring
diagram that's actually a much large images, sized down by the HTML. Note you
can trigger this with the arrow keys as well, and also by scrolling down, but
pageup is the most noticable. I'm very briefly tapping the key, so somehow the
heavy rendering work seems to cause Moz to miss the key release event.

Comment 1

[Jeremy M. Dolan]

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.5b) Gecko/20030803 Mozilla
Firebird/0.6.1

Comment 2

[Jeremy M. Dolan]

-> default FB general owners

Comment 3

[Adam Roben]

In order to help future people confirm this bug, I found it easiest to see when
holding either the up or down arrow to scroll.  Paging-up caused me to miss the
bug entirely (on a 1280x1024 screen).  Using the arrow keys shot my CPU usage
high enough that XMMS stopped playing briefly.

Comment 4

[Dan Kamins]

See also bug #238423: 
http://bugzilla.mozilla.org/show_bug.cgi?id=238423

That bug is a more general filing of this one and includes a more specific test
case (as well as a reference back to this bug).

Comment 5

[Ben Fowler]

Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8a) Gecko/20040425
Firefox/0.8.0+

None of the cases referenced from here cause me any problems. Is this hardware
specific?

Comment 6

[:Gavin Sharp [email: [e-mail]]]

I can't reproduce this one anymore in a recent build.