The identity-popup in browser.xul is constructed with hidden=true to prevent frame allocation as part of browser startup. The onmouseup handler on the identity-box element unhides the popup before showing, but the first time this happens, the call to openPopup() doesn't result in the popup being displayed, since the popup hasn't be built yet. Neil & Gavin suggest 3 possible fixes: 1) Wrap the openPopup call in a setTimeout() so that the function returns before openPopup is called, and the popup has time to build itself 2) Attempt to access the box object in some way, e.g. by asking for the popup's width, which should trigger relayout as a side effect 3) Wait for bug 394887, which may make it unnecessary to hide the popup for performance reasons in the first place. #3 is obviously the most appealing.

Litmus triage team: Tomcat will add Litmus test case

Looks like this isn't needed anymore since bug 394887 was fixed. If so, please resolve appropriately.

I confirm that this appears resolved on trunk for mac and windows - resolving.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a9pre) Gecko/2007102402 Minefield/3.0a9pre ID:2007102402 VERIFIED

https://litmus.mozilla.org/show_test.cgi?id=5031 has been added.