User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8a) Gecko/20040506 Firefox/0.8.0+ Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8a) Gecko/20040506 Firefox/0.8.0+ If you have no browser window open and choose the menu option Go -> History, the history is not opened in a new window. But if you go back to the Go menu, you will see that the History item now has a checkmark next to it. For what reason? Who knows, weird ey. Reproducible: Always Steps to Reproduce: 1. Close any open browser windows. 2. Open the Go menu. 3. Choose the History item. 4. Go back and open the Go menu again. Actual Results: The History item in the menu now has a checkmark next to it. Expected Results: The history should actually open in a new window and there should not be a checkmark added to the menu item for no apparent reason.

I'm thinking the reason for that is Firefox did/thinks it opend history on the "hidden" window. I think I've seen this bug before.

Until an history manager is implemented, we should disable the menu item.

The history menu item is now disabled (when no window is open), marking invalid.