190497 - Z-Index on absolutely positioned div tags ignored for scrollbar of multiple select form control

Status: RESOLVED DUPLICATE of bug 126263

(Core :: Web Painting, defect)

Description

[Shawn Walker]

User-Agent:       Mozilla/5.0 (WinXP; en-US; rv:1.3a) Gecko/20021003
Build Identifier: Mozilla/5.0 (Linux; en-US; rv:1.3a) Gecko/20021003

Z-Index on absolutely positioned div tags ignored for scrollbar of multiple
select form control.

If I absolutely position a div over form elements on a page, Mozilla correctly
draws it over all the form elements except for the "multiple select" form
element. In the case of the "multiple select" form element, it draws the div
over the select box, but under the scrollbar belonging to it.

Changing z-index on the div has no effect.

Reproducible: Always

Steps to Reproduce:
1.
2.
3.



Expected Results:  
Mozilla should have drawn the absolutely positioned div "above" the scrollbar of
the multiple select form element.

Comment 1

[Shawn Walker]

Ignore that it says ("WinXP") in the tag, I had to manually change my user-agent
due to some sites that I use that for some reason mess up their javascript if
they don't find "WinXP" in the Mozilla user agent tag.

Comment 2

[Ruslan Ismailov]

If I understood correctly, it is dupe (or maybe result) of bug 186754 (div's
with overflow:scroll and overflow:auto invalidate z-index order). 

Comment 3

[Olivier Cahagne]

related: bug 78087 and bug 186754.

Comment 4

[Ruslan Ismailov]

Attachment: select with z-index

This testcase for select multiple and select, the source of trouble in this
scrollbar.

Comment 5

[Shawn Walker]

I'm not using the overflow property FYI. Thanks for making the test case. I
appreciate the assistance.

Comment 6

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

Mike, I think this is the bug you're interested in. Do you have another bug
number already?

Comment 7

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

Well, this bug can't be fixed without getting rid of the native scrollbars on
"select".

Comment 8

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

*** This bug has been marked as a duplicate of 126263 ***