As a user it would be nice to be able to collapse the sidebar to a view with Icons only or completely to a hamburger menu. Currently it does collapse when the window is being resized to a smaller viewport, but it's not possible to collapse it when using HelloID on full screen.

A usecase for this is for example when editing delegated forms. Putting two windows next to each other for comparing is quite hard due to the sidebar taking up so much room and compressing the other elements on the page.