184556 - style rule for fixed background causes lag when text scrolled

Status: RESOLVED DUPLICATE of bug 90198

(Core :: DOM: CSS Object Model, defect)

Description

[Candace Boheme]

User-Agent:       Mozilla/4.0 (compatible; MSIE 6.0; Windows 98; Win 9x 4.90; Q312461)
Build Identifier: Unknown.  Error reported by a second party.

The fixed background was reported to not be working correctly. Comment 
was "Mozilla 1.0.1: Laggy as heck. About 3 updates/second. It makes scrolling 
the page really painful, you have to wait for the screen to slowly refresh. And 
I'm using a 900Mhz computer... relatively fast. Could be a browser bug."

Reproducible: Always

Steps to Reproduce:
1.
2.
3.

Comment 1

[Boris Zbarsky [:bzbarsky]]

Is this really OS=ALL?  For example, I see no problems on Linux (and all the
reported issues we have with this are on Windows).

Further, 1.0.1 is quite old; testing with it is pointless (especially since
major changes to background tiling have happened on the trunk since).

Comment 2

[Kris Kelvin]

The following 4 bugs seem to be related (or duplicates):

bug 90198  - scrolling very slow (fixed background)
bug 172626 - Very slow scrolling unless the background is commented out
bug 176150 - Fixed backgrounds cause horribly slow scrolling
bug 184556 - style rule for fixed background causes lag when text scrolled

Comment 3

[Sören 'Chucker' Kuklau (gone)]

Indeed.

*** This bug has been marked as a duplicate of 90198 ***