I'm running Chromium 18.0.997.0 (Developer Build 116462 Linux) Ubuntu 11.10 and occasionally when I open a context menu it will leave an artifact on the screen that is always above any application and will not go away unless I completely close down Chromium. This problem happens intermittently and is hard to reproduce, but it happens at least once a day and may be related to how long I have it open since I only ever close when there is an update or this problem occurs. I've attached an example of what happens. Anyone have any ideas if and how I can fix this?
