When clicking on “Timeline” or “Keyframes” Shotcuts shows the corresponding pane.
Suggestion: When a pane is active in the UI a click on the menu button should also hide the pane again. Actually the same as a click e.g. at View->“Timeline” does.
Use case: Some panes I only have sometimes active (e.g. “Keyframes”) and so it would be easier to only show them for a short period.