265856 - Theme CSS files can cause browser hang

Status: RESOLVED INVALID

(Firefox :: General, defect)

Description

[betheking]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.3) Gecko/20041022 Firefox/1.0
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.3) Gecko/20041022 Firefox/1.0

When using a specially modified theme, Firefox will under certain circumstances
enter a busy loop when opening a new tab. I've only noticed it when running on
Windows XP using the default Windows XP look (and having the tab bar hidden when
only one web side is open). The same theme works just fine on Windows XP with
the classic look or on Windows 2000. See below for the small changes needed.

Reproducible: Always
Steps to Reproduce:
1. Download Qute 2.1.4 (it might not be available on Mozilla Update; I found it
on the authors site).
2. Unpack the theme.
3. Edit the file global\global.css, adding the following lines at the end:
   browser[type] {
     border: solid 2px;
     -moz-appearance: ListBox;
   }
4. Re-package the theme and install it.
5. Start Firefox on Windows XP with the default system theme ("Windows and
Buttons" in Display Properties/Appearance set to "Windows XP Style").
6. Open a new tab.
Actual Results:  
The browser entered a busy loop.

Expected Results:  
A new tab should be opened.

Comment 1

[Gabriel Sjoberg]

Please recheck this bug against a recent nightly build[1] to verify that the
behavior still exists and post the results here.

Also, please supply a testcase to help others verify this behavior.

Thanks.

[1] ftp://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-mozilla1.8/

Comment 2

[Samuel Sidler (old account; do not CC)]

Closing this bug as INVALID. If you can provide the information requested in comment 1, you may reopen this bug.