71238 - div with overflow:auto (scrollbars) doesn't respond to zindex

Status: VERIFIED DUPLICATE of bug 14691

(Core :: DOM: Core & HTML, defect)

Description

[Jeremy Rempel]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; 0.8) Gecko/20010215
BuildID:    20010306

When you specify a DIV element and use the CSS property overflow:auto to show
scrollbars, it no longer responds to zindex. The border of the DIV element does
but not the actual content.

Reproducible: Always
Steps to Reproduce:
make a page w/ a div element. Set a explict size, width & position. Put enough
stuff into the DIV that scrollbars appear and then position another element
directly on top of it.

Expected Results:  Div element should go underneath others.

Comment 1

[Boris Zbarsky [:bzbarsky]]

Jeremy, do you have an example page you could attach by any chance?  Also, could
you try enabling the new viewmanager [
user_pref("nglayout.debug.enable_scary_view_manager", true); ] and seeing
whether that helps? (the old viewmanager has known bugs with positioned elements).

Comment 2

[Boris Zbarsky [:bzbarsky]]

Attachment: Testcase with two positioned divs

Comment 3

[Boris Zbarsky [:bzbarsky]]

Jeremy, the attached testcase renders exactly the way it's supposed to for me
with builds 2001-03-05-08 and 2001-03-07-14, old and new viewmanagers both, on
Linux.

Comment 4

[Jan Carpenter]

changing qa contact

Comment 5

[Jeremy Rempel]

Attachment: main htm file

Comment 6

[Jeremy Rempel]

Attachment: style sheet file

Comment 7

[Jeremy Rempel]

Attachment: JS file

Comment 8

[Boris Zbarsky [:bzbarsky]]

Attachment: Version oh HTML file that can be loaded right from bugzilla (points to css and js in bugzilla)

Comment 9

[Boris Zbarsky [:bzbarsky]]

Jeremy, I see the problem in your testcase (div does not disappear when you
switch tabs).  The problem is only there with the old viewmanager.  With the new
viewmanager (put user_pref("nglayout.debug.enable_scary_view_manager", true); in
your prefs.js file to try the new viewmanager) the page renders correctly.

See bug 39621 for the status of the new viewmanager, but the summary is that it
should be turned on by default any day now.

*** This bug has been marked as a duplicate of 14691 ***

Comment 10

[Fabian Guisset]

VERIFIED dup
new view manager will be turned on after 0.8.1