115608 - Setting display={block, none} on children of an overflow:auto element hides them all

Status: VERIFIED WORKSFORME

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

Description

[Fabian Guisset]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:0.9.6) Gecko/20011120
BuildID:    2001112009

We have a <div> element with overflow:auto.
This div element has other div elements as children.
They are initially set to display:none. Dynamically setting
style.display="block" on one of the child div elements works fine. However when
setting style.display="none" on the same child div element and setting
style.display="block" on another child div element, all of them disappear.
Please see the attached testcase. It might be a style system bug, but since it
apparently happens only when doing it dynamically, I'll file it in DOM Style.

Reproducible: Always
Steps to Reproduce:
1. Open attached testcase.
2. Pick "first" in the dropdown menu. The "first" div appears at the top.
3. Pick "second" in the dropdown menu.

Actual Results:  All div's are hidden.

Expected Results:  The "second" div appears and the "first" div is hidden.

Tested on NS6.0, NS6.2, Mozilla 0.9.6 on windows.
The problem disappears if the container div has overflow:hidden instead of auto.
Apparently the problem appears also if it has overflow:scroll.
Setting severity to normal since there is a workaround.
There is another testcase just a little different that seems to work fine at
http://guisset.tripod.com/mozilla/testcase/ppkbug.html

Comment 1

[Fabian Guisset]

Attachment: Testcase for bug 115608

Comment 2

[José Jeria]

This works for me with build 20011215 Win2000.

Comment 3

[Christopher Hoess (gone)]

WFM on Linux, built from last night's CVS.

Comment 4

[Fabian Guisset]

Nevermind it works on my 2001121403 nightly as well.
Will teach me for not testing with a nightly :-(
Marking WORKSFORME, thanks for those who tested.

Comment 5

[Christopher Hoess (gone)]

Verifying WFM.