When I create a new class, I get a "Coverage data outdated!" banner on the editor for that file. I think this UI is wrong for several reasons: 1. It takes up too much space. 2. Great, so the data is out of date – just don't show the coverage highlights in the gutter. 3. The data isn't really 'outdated' – it's just not there for this file, since it hasn't been run yet. My main complaint is #1 – why introduce a brand new affordance in the UI just for this error? I'm not aware of any other errors that pop up as a banner at the top of the editor.