507307 - Dynamically created elements render differently than static html (relatively positioned inline as abs-pos container)

Status: NEW

(Core :: Layout: Positioned, defect)

Description

[David Maggard]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 (.NET CLR 3.5.30729)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 (.NET CLR 3.5.30729)

Dynamically created elements render differently than static html, if you do something to rerender the page(zoom, leave the use back to return to page, etc) it displays correctly

Reproducible: Always

Steps to Reproduce:
1.View page
2.script runs and creates elements

Actual Results:  
content is rendered incorrectly

Expected Results:  
content is rendered correctly

Comment 1

[David Maggard]

Appears to be related to absolutely positioned element inside relatively positioned elements

Comment 2

[Michael Ryan]

Attachment: Smaller testcase

Comment 3

[Michael Ryan]

Attachment: 3.5.1 vs 20090613 trunk build

From left to right:
1) 3.5.1
2) 3.5.1 after zoom-in/zoom-out
3) 20090613 trunk build
4) 20090613 trunk build after zoom-in/zoom-out

Comment 4

[Michael Ryan]

It's quite a bit better in recent trunk builds as you can see in the screenshot, but it's still a little off.

Window for behavior change:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=860a9acc39b1&tochange=69c6dbdfd179

Comment 5

[Michael Ryan]

Hmm... looks like my testcase doesn't catch all the intricacies of the original testcase.

1) Original testcase is still way off in recent trunk builds
2) If you do a hard refresh, both "close buttons" initially display below the Google logos
3) The top close button moves up a pixel after a zoom-in/zoom-out

Comment 6

[David Maggard]

Not to rub it in but this renders properly in safari, opera, chrome, ie8, ie7, and ie6