By default on linux all the minimize/maximize/close buttons are on the right-hand side. It isn’t always true system-wise, because eg. in Gnome Tweaks you can set those buttons to be displayed on the left. It’s quite annoying when everything works ok or at least allows to hide those buttons and Obsidian is the only app that doesn’t respect it. For me it would be nice if it would be configurable in settings, not necessarily automated.