KeepassDX is the modern one I'm referring to. Because of the whole Android 11 SAF/scoped storage issue, syncing to databases and clouds that use DocumentsUI (the special folders you see when your Files manager window opens) fails all the time. I've repeatedly lost data due to KDX not properly saving or syncing, causing file conflicts and the passwords I literally just saved to vanish the next time I unlock the database.
The developer's response is that it's everyone else's fault that their apps' SAF implementation is bad, not KDX.