Originally posted by MooreBilly:

It happened to me once as well. IG says its a known bug. occurs if there is an internet hiccup when quitting the game. Something about cloud saves. only work around is to have a backup... which i didn't. or just spawn your stuff back in. which i did.

link to the bug : https://valheimbugs.featureupvote.com/suggestions/191826/read-here-died-but-your-tombstone-is-not-on-server

Did you actually read what it said on the link you provided? It has nothing to do with cloud nor saves nor quitting the game. The link you gave is about is a problem that occurs if you're playing on a different server, meaning you're effectively playing someone else's PC with a poor connection. And you die exactly as your connection is disconnected so your friend's PC doesn't record it, and you don't bother waiting for the re-connection to succeed.

For your problem (not the OP), the solution is to not have a terrible connection, or wait for it to reconnect if you die at the "exact" split second your crappy connection dies, or just stick to a single player world (i.e. your own PC).