If the browser isn't already started, clicking on a link from the Mail app causes the browser to show without functioning UI. STR: 1. Make sure the browser is fully closed (hold Home and click the X if browser is there) 2. Go to Mail and click a link. http://farm9.staticflickr.com/8392/8556129191_c36fddab31.jpg 3. A dialog will open asking you to confirm: http://farm9.staticflickr.com/8519/8556129145_ae3bd43bd4.jpg 4. You'll see this UI: http://farm9.staticflickr.com/8102/8557239408_dda9893af5.jpg Nothing works if you click on e.g. the location bar, or the Bookmark icon. This bug doesn't seem to happen if the browser was previously started on its own first. Tested on Unagi running B2G 1.1.0.0-prerelease, build id 20130311095652, update channel beta.