Created attachment 567264 [details] menu.flv User Agent: Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0 YB/3.5.1 Build ID: 20111009031012 Steps to reproduce: Open firefox menu, when firefox windows at secondary display. Actual results: Menu hiding. If i move mouse on items with submenu, main menu visible, but submenu be invisible.
Does the issue still occur if you start Firefox in Safe Mode? http://support.mozilla.com/en-US/kb/Safe+Mode How about with a new, empty profile? http://support.mozilla.com/en-US/kb/Basic%20Troubleshooting#w_8-make-a-new-profile Please post the graphics section from about:support
I found what Forecastfox(https://addons.mozilla.org/en-US/firefox/addon/forecastfox-weather/) addon do this graphic bug. Graphic info attached into "about:support" files.
Can you report to the Forecastfox developers (email@example.com) and point them to this bug?
Whiteboard: [Caused by Forecastfox]
Closing bug as invalid as the error isn't in Firefox code
Status: UNCONFIRMED → RESOLVED
Last Resolved: 7 years ago
Component: Menus → Extension Compatibility
QA Contact: menus → extension.compatibility
Resolution: --- → INVALID
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