Mobile: can't close the map list — 'Close list' button is behind the list

On mobile, after tapping "Show list" on the map (discovery), the list of rings opens over the map. The "Close list" button is rendered behind the list cards, so it can't be tapped — there is no way to close the list. **Expected:** The "Close list" button should sit on top of the list and be tappable to close it. **Where:** Mobile — map / discovery view, after opening the list ("Show list" → "Close list"). **Steps to reproduce:** 1. On mobile, open the map / discovery view 2. Tap "Show list" 3. Try to tap "Close list" — it is behind the list cards and does not respond; the list can't be closed