[Bug 1402059] [NEW] Small gap appears in Firefox main window after first use of globalmenu

[Carlo Cannas]

Public bug reported:

To reproduce:

1. Start Firefox on Unity
2. Open any menu from the globalmenu (e.g. File) of main window
3. Notice that the toolbars have moved 2px below their original position (see attachment)

This seems to happen only on the main window, other windows such as the
Scratchpad window doesn't show the problem.

I added to my userChrome.css the following piece of code:

window[shellshowingmenubar="true"] toolbar[type="menubar"]:not([customizing="true"]){
 height: 0 !important;
}

That solved the problem for me, and so far I didn't found anything
broken by that CSS rule. So it should be enough to put it in xul.css by
unity-menubar.patch.

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "screenshot.png"
   https://bugs.launchpad.net/bugs/1402059/+attachment/4279889/+files/screenshot.png

** Description changed:

  To reproduce:
  
  1. Start Firefox on Unity
  2. Open any menu from the globalmenu (e.g. File) of main window
  3. Notice that the toolbars have moved 2px below their original position (see attachment)
  
  This seems to happen only on the main window, other windows such as the
  Scratchpad window doesn't show the problem.
  
  I added to my userChrome.css the following piece of code:
  
  window[shellshowingmenubar="true"] toolbar[type="menubar"]:not([customizing="true"]){
- 	height: 0 !important;
+  height: 0 !important;
  }
  
  That solved the problem for me, and so far I didn't found anything
- broken by that CSS rule. So it should be enough to put it xul.css by
+ broken by that CSS rule. So it should be enough to put it in xul.css by
  unity-menubar.patch.

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https://bugs.launchpad.net/bugs/1402059

Title:
  Small gap appears in Firefox main window after first use of globalmenu

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