I fully agree, that blue square is horrendous, and I don’t even really see the point since both tabs are reachable anyway, and the live tab is till shown in the tabs bar. I looked for a way to change that via the css user file but I’m too noob to fin...
I agree with many others ; this feature is a no-brainer. A simple shortcut button to toggle full-screen mode would be incredibly convenient, and I bet it's not even that complicated to implement.
