215799 - Preferences category tree misaligned when scrollbar dissapears

Status: RESOLVED DUPLICATE of bug 212839

(Core :: XUL, enhancement)

Description

[Bob Firth]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5a) Gecko/20030728 Mozilla Firebird/0.6.1
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5b) Gecko/20030808

When a branch in the prefs category tree is contracted so that the scrollbar is
no longer required, the tree is aligned to the bottom of the pane instead of the
top. 

Reproducible: Always

Steps to Reproduce:
1. go to edit->preferences
2. expand some branches to make the scrollbar appear (e.g. only Composer,
ChatZilla, Advanced)
3. scroll down so that the top of the tree is no longer visible
4. contract one of the branches to make the scrollbar dissapear (e.g. Advanced)
Actual Results:  
The tree which is now small enough to fit in the pane is aligned to the bottom
of the pane, and there are tree fragments filling the space at the top.

Expected Results:  
The tree should be aligned to the top of the pane.

Comment 1

[Bob Firth]

Attachment: screenshot of displaced tree

screenshot of displaced tree (should be aligned to top, without random tree
bitties added on top)

Comment 2

[Boris Zbarsky [:bzbarsky]]

.

Comment 3

[[e-mail]]

*** This bug has been marked as a duplicate of 212839 ***