The map doesn't clean up after itself. 🔼
It's always done that as far as I can remember.
Write a script that checks that map tiles have a region in the database at that location, delete them if not.
reported=2020-04-27 07:19:35
reporter=onefang
priority=none
category=Bug
severity=trivial
resolution=open
2021-08-04 13:22:55 onefang: The hard part is the map tiles are multi resolution for [s]laggy[/s] ease of zooming, some map tile images on disk cover multiple sims. So need to update all the resolutions.
2021-08-04 13:25:34 onefang: A further complication is off grid sims.
2022-05-27 00:30:51 onefang: http://opensimulator.org/mantis/view.php?id=6391 where they have been arguing for ten years, and still not fixed. lol