Linux version of firefox opens new windows fullscreen when parent window is fullscreen




7 years ago
7 years ago


(Reporter: Matt Lashof-Regas, Unassigned)


Firefox Tracking Flags

(Not tracked)





7 years ago
User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv: Gecko/20101203 Firefox/3.6.13
Build Identifier: Mozilla/5.0 (X-11; U; Linux x86_64; en-US; rv: Gecko/20100723 Red Hat/3.6-3.el5 Firefox/3.6.7

The Linux version of firefox will open a new window (with in fullscreen if the parent window is in full-screen mode.  

This is very annoying, because the new window completely covers the parent window, making it impossible to see that there are in fact two windows.  If you press F11 to bring the child window out of fullscreen mode, the top line of the child window (where the X button is) is above the top of the screen unless you set 'top=NNN', where NNN > 0 inside the 3rd argument to

The Windows and MacOS versions don't do this; it is only a problem with the Linux version.

Reproducible: Always

Steps to Reproduce:
1.  Go to or any other page where you can click a link to open a popup.
2. Press F11 to put Firefox into fullscreen mode
3. Click the link to open a popup ('Open the JavaScript Window Example 1' on the example page).
Actual Results:  
The popup opens in fullscreen mode covering the parent window.

Expected Results:  
The popup should be the width and height set in the third argument to (350x250 in the example page)

Comment 1

7 years ago
The user-agent string listed above is the browser that I used to report the bug.  The bug does not appear in that browser, see the 'Build Identifier' field.

Comment 2

7 years ago
Mozilla/5.0 (X11; Linux i686; rv:2.0b12pre) Gecko/20110218 Firefox/4.0b12pre

Confirming bug. Issue present also on 3.6.13
Ever confirmed: true
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