On certain pages of the Settings panels, the close box in the top right corner overlaps the vertical scrollbar. This looks a bit odd because of the transparency and also makes both controls a bit harder to hit.
Repro
Go to Settings → (any of) Appearance, Hotkeys, Community Plugins, etc—any page that is long enough to contain a scrollbar
If you turn scrollbars always on, they still auto-hide, but you see the UI elements shift to the side to make room. Not that X though. It stays in place.
You’ll need to fully restart Obsidian to see the scrollbars show, but they should work, I think Electron only checks the platform settings for this on start-up.