project settings, members etc. is inaccessible on mobile
Since the navigation redesign the project settings, members and similar links have been banished to a little cog wheel button on the right side of the screen. This button disappears at 991px, so the only way to access these pages on mobile is by typing in their url.
Firefox mobile's "Request Desktop Site" feature sets the viewport to 980px to fix broken responsive websites like this, but because the breakpoint is at 991px, it doesn't help.