Created attachment 568325 [details] Screenshot 1 Build ID: Mozilla/5.0 (Android;Linux armv7l;rv:10.0a1)Gecko/20111019 Firefox/10.0a1 Fennec/10.0a1 Device: Samsung Galaxy S OS: Android 2.2 Steps to reproduce: 1. Open Fennec App 2. Perform any action which needs a restart 3. Tap on Restart button 4. Check the top-left corner Expected result: After step 4, there shouldn't be any black spots displayed. Actual result: After step 3, just after the Restart button is tapped, a black rectangular spot is visible on the top-left corner until the app is closed. After step 4, the black spot is still displayed on the top-left corner. Please see the attached screenshots. Note: If device orientation is changed, the black spot will be not visible anymore.