[Bug 1361439] [NEW] Firefox 31 menu and tooltips appear on wrong display

[hackel]

Public bug reported:

Running Firefox 31.0+build1-0ubuntu0.14.04.1 on a dual-display system
with Intel HD graphics.  Both displays are running at 1366x768, the
secondary positioned using xrandr to the right of the primary.

If Firefox is maximised on the primary (left) display, clicking on the
menu button will always cause the menu to appear on the second monitor.
It also happens when Firefox is unmaximized whenever the right edge of
the window is greater than 1197 pixels.  The same is true of the
tooltips that appear over the firefox buttons.  Interestingly, when
right edge of the window is at 1197px, the tooltip will display on their
monitor depending on where in the button I hovered to generate it.
Also, the next button on my toolbar, which happens to be for the Request
Policy extension, generates a rather wide popup.  This also appears on
the second display, but not until the right edge is over 1222px.

My second monitor is a television across the room, so this makes using
Firefox rather difficult!

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

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Title:
  Firefox 31 menu and tooltips appear on wrong display

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