574608 - contents area not repainted when close a dialog window in Window7 Classic Style

Status: RESOLVED DUPLICATE of bug 574599

(Core :: Graphics, defect)

Description

[Alice0775 White]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.1; WOW64; en-US; rv:1.9.3a6pre) Gecko/20100624 Minefield/3.7a6pre ID:20100624221810
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; WOW64; en-US; rv:1.9.3a6pre) Gecko/20100624 Minefield/3.7a6pre ID:20100624221810

Since In last hourly http://hg.mozilla.org/mozilla-central/rev/51bd519736c4.
Contents area not repainted when close a dialog window in Window7 Classic Style.
After close the dialog, a white rectangle is left.

This problem does not happen in hourly http://hg.mozilla.org/mozilla-central/rev/522df66198cf

And this problem does not happen in Aero style.

This may be related/duplicated to Bug 574599.

Reproducible: Always

Steps to Reproduce:
1. Start Minefield with new profile
2. Open URL ( http://www.mozilla.org/projects/minefield/ )
3. Open Download Manager (Ctrl + J)
4. Move the Download Manager to contents area. And  place it not to protrude from the contents area.
5. Close the Download Manager 

Actual Results:
After close the dialog, a white rectangle is left.

Expected Results:
The contents area should be repaint properly.

Comment 1

[Alice0775 White]

regression window
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=522df66198cf&tochange=51bd519736c4

Comment 2

[Alice0775 White]

it also happens on Windows XP Sp3 with Classic and Luna style
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.3a6pre) Gecko/20100625 Minefield/3.7a6pre ID:20100625040119

Comment 3

[Alice0775 White]

In adittion comment#0
The dialog is not only Minefield's but also other apprication's window.

Comment 4

[aja+bugzilla]

Perhaps a DUP of:
Bug 574599 - content not repainted when dismissing 2nd level menu since drawing on titlebar landing