This tiny tweak would help unify/align the behaviour of the GUI with existing conventions. I often find myself trying to open the previous/next note by middle mice clicking out of the habit of doing so in web browsers. This small change would be a great quality-of-life upgrade!
Use case or problem
Middle mouse click on back/forward arrow does nothing
Proposed solution
Middle mouse click on back/forward arrow should open the prev/next tab and switch view to it