303434 - XUL overlay (statusbar panel with a long label) breaks HTML page layout

Status: RESOLVED INVALID

(Core :: Layout, defect)

Description

[Julien Lecomte]

User-Agent:       Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4

Attached are a simple XUL overlay and a test HTML page containing a table 
occupying 100% of the width of the page. Install the overlay, open the web 
page and slowly decrease the width of your browser window. The table will 
resize itself to occupy 100% of the width of the page, up to a point, when 
there is not enough room to display the label added by the overlay.

Also, window.innerWidth does not report the actual width of the window, which 
is really bad.

Note that this kind of overlay is used by A LOT OF extensions (ex: 
StockTicker) and this breaks the layout of small dialog boxes in DHTML 
applications, which is why I am setting the severity to major.

Reproducible: Always



Expected Results:  
The label should have an ellipsis (...), the layout should be correct, and 
window.innerWidth should always report the actual width of the window.

Comment 1

[Julien Lecomte]

Attachment: Simple XUL overlay

Comment 2

[Julien Lecomte]

Attachment: Test page

Comment 3

[Julien Lecomte]

Interestingly, if you hide the status bar (from the View menu for example), 
the layout will appear correct, and if you show the status bar, the layout 
will appear bad again.

Comment 4

[Julien Lecomte]

*** Bug 290882 has been marked as a duplicate of this bug. ***

Comment 5

[Boris Zbarsky [:bzbarsky]]

This is a bug in the overlay....  The web page rendering area can't become narrower than that status bar.  Note that this is why Mozilla and Firefox do NOT have such status bars.

Please file the bug on whatever extension authors are doing this inanity.