User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en) AppleWebKit/419 (KHTML, like Gecko) Safari/419.3 Build Identifier: version 2.0.0.0 (20070326) On machines with multiple monitors, if the inbox window is not on the primary display, then contextual do not render correctly. Instead of being draw on the display in which the click occured, they appear on the edge of the primary display. Reproducible: Always Steps to Reproduce: 1.Move Thunderbird to another display 2.Right click on anything that will invoke a contextual menu 3. Actual Results: Contextual menu appeared on left edge of the primary display (my secondary monitor is on the left of my primary one) Expected Results: Contextual menu should have appeared on the secondary display.