GNOME Bugzilla – Bug 673018
Message tray pointer barrier doesn't RTL mirror
Last modified: 2012-11-02 15:31:14 UTC
In layout.js:_updateTrayBarrier(), it should put the pointer barrier on the left in right-to-left locales to match the location of the hot corner.
The issue is still present in 3.6, but I don't see how the pointer barrier is still useful after the latest message tray updates - see bug 687457.