561659 - Listitem does not appear, after collapse/expand scolled listbox

Status: RESOLVED WORKSFORME

(Core :: XUL, defect)

Description

[Alice0775 White]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a5pre) Gecko/20100425 Minefield/3.7a5pre ID:20100425040736
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a5pre) Gecko/20100425 Minefield/3.7a5pre ID:20100425040736

Listitem does not appear, after collapse/expand scolled listbox

Reproducible: Always

Steps to Reproduce:
1. Start Minefield with "NEW profile".
2. Install https://addons.mozilla.org/en-US/firefox/addon/2324 (This extention added listitem to "Clear Recent History" dialog.). And restart.
3. Tools > Clear Recent History...
4. Collapse and Expand listbox by click small buttom.
5. Scroll to bottom of listbox.
6. Collapse and Expand listbox by click small buttom.

Actual Results:
 item(Browsing & Download History) is missing,

Expected Results:
 No item is missing.

Regression Window:
Works:
http://hg.mozilla.org/mozilla-central/rev/f86035589b4d
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a4pre) Gecko/20100328 Minefield/3.7a4pre ID:20100328090648

Fails:
http://hg.mozilla.org/mozilla-central/rev/6f80d1746d80
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a4pre) Gecko/20100328 Minefield/3.7a4pre ID:20100328193141

PushLog:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=f86035589b4d&tochange=6f80d1746d80

Comment 1

[Alice0775 White]

Attachment: testcase

Steps to Reproduce:
1. Scroll to bottom of listbox.
2. Collapse and Expand listbox by click expander button.

Actual result:
Items are missing.

Comment 2

[Alice0775 White]

(In reply to comment #0)
Spell miss!
s/click small buttom./click small button./g

Comment 3

[Boris Zbarsky [:bzbarsky]]

roc, looks like a regression from one of your changes...

Comment 4

[Timothy Nikkel (:tnikkel)]

I retested this, it seems to be fixed now. (Testing this now requires some way of loading xul files now that it is disabled.)

Comment 5

[Alice0775 White]

I confirmed. It was fixed.

Fixed range:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=6baaadf1ddd0&tochange=e560e0fe90d1

Comment 6

[Timothy Nikkel (:tnikkel)]

Thanks for the fixed range!

From that range looks like probably bug 584703 fixed this.

Comment 7

[Firefox Bug Husbandry Bot]

Moving to Core:XUL per https://bugzilla.mozilla.org/show_bug.cgi?id=1455336