342317 - Opacity on an absolutely positioned layer does not work past a page height of 987.

Status: RESOLVED WORKSFORME

(Firefox :: General, defect)

Description

[Jeremy]

User-Agent:       Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8.0.4) Gecko/20060508 Firefox/1.5.0.4
Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8.0.4) Gecko/20060508 Firefox/1.5.0.4

If you have an absolutely positioned layer with opacity that extends beyond a y-postition of 987 it causes the display engine to stop correctly displaying anything.  The layer just simply does not display beyond that y-position.  And anything "underneath" the layer that you attempted to display stops rendering correctly.  If you scroll up or down, the existing stuff will just "streak".

Reproducible: Always

Steps to Reproduce:
1. Load a page that has a page height > 987.
2. Show a <div/> that has opacity and is absolutely positioned such that crosses the height of 987.

Actual Results:  
1. Notice the div does not display.
2. Notice if you scroll the page gets "messed up".

This page is now unusable until you refresh.

Expected Results:  
Layer should have displayed correctly.

Comment 1

[Steve England [:stevee]]

Reporter, do you still see this problem with the latest Firefox 2? If not, can you please close this bug as WORKSFORME. Thanks!