370524 - Applying overflow-x to statusbar causes window resize not to follow mouse pointer

Status: NEW

(Core :: Layout, defect)

Description

[Andy McDonald]

User-Agent:       Opera/9.01 (Windows NT 5.1; U; en-gb)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a3pre) Gecko/20070215 Minefield/3.0a3pre

Apply the following CSS

statusbar#status-bar { overflow-x: hidden !important; }

and resize a window vertically with the bottom-right grippy: the pointer moves much faster than the resized window, and the bottom of the window flickers.


Reproducible: Always

Steps to Reproduce:
1. In a fresh profile, put "statusbar#status-bar { overflow-x: hidden !important; }" (no double-quotes) in userChrome.css
2. Resize a Firefox window vertically
Actual Results:  
The mouse pointer moves much faster than the resized window, and the bottom of the window flickers

Expected Results:  
The window resizes by keeping pace with the pointer; there is no flickering.

I discovered this in coding FoxClocks (https://addons.mozilla.org/1117/), in working around the fact that if there's too much content on the statusbar, web content and the vertical scrollbar overflow beyond the right-hand side of the window, but there's no horizontal scrollbar. The above CSS fixes this issue, but causes the pointer problem.

Comment 1

[Andy McDonald]

URL should be https://addons.mozilla.org/firefox/1117/

Comment 3

[Doug Shelton]

This problem occurs under Firefox BeOS port as well.  

Comment 4

[Adam Augustine]

This bug also effects other plugins, like forecastfox:

http://bugs.ensolis.com/show_bug.cgi?id=239

Which also uses the css snippet:

statusbar#status-bar {
  overflow-x: hidden;
}

Comment 5

[David Baron :dbaron: (⌚️UTC-5, no longer working on Mozilla)]

FWIW, these XUL hacks should really be done using -moz-box-flex, not overflow-x.