281887 - CSS position:fixed causes flicker with innerHTML

Status: RESOLVED FIXED

(Core :: Web Painting, defect)

Description

[Nigel McFarlane]

Tested on MAS 1.7.5 and Fx1.0.

A simple test case attached shows flickering of a position:fixed
element whose content is mutated using .innerHTML. Uncomment
the commented out .nodeValue line, and comment out the .innerHTML
line to remove the problem. Alternately, remove the position:fixed
style.

The bug has to do with .innerHTML. Safari has had problems with .nodeValue,
so .innerHTML is the most portable solution (or at least the
most well-known portable solution). Mozilla performs poorly against
other browsers when this "truly portable" .innerHTML version is used,
since other browsers (especially IE) flicker less.

Note that Mozilla doesn't flicker for normal positioning. Where would
you want to put this clock on a typical page, though? In the top right
corner.

There are lots of position:fixed bugs, but I couldn't find one
explicitly for this combination. Feel free to dup.

- N.

Comment 1

[Nigel McFarlane]

Attachment: Test page

Comment 2

[Nigel McFarlane]

Attachment: Test page script

Comment 3

[Martijn Wargers (dead)]

Attachment: Testcase that works directly

This testcase works directly in the page, so it's easier to test.

I can see the bug in Mozilla1.7, but I can't see the bug in the latest trunk
(1.8a) build.
I think this is already fixed somehow (I suspect the fix for bug 244366 fixed
this).

Comment 4

[Hermann Schwab]

seen on
Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.7.6) Gecko/20050207
Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.7.5) Gecko/20050211 Firefox/1.0

current trunk nightly is working.

Comment 5

[Robert O'Callahan (:roc) (email my personal email if necessary)]

marking FIXED based on those comments