Is there a fix for it? Or is it a Rust bug? 

Can somebody help with this or fix it? 

i am as well having the same issue with my server. Been looking for answers as to why. Thought maybe my server wasnt autosaving so tried server.writecfg and save but nothing. Also thought maybe one of my plugins is bugging it out but not sure.

No I think is the umod case it self maybe. We need more answers. 

Bazim

No I think is the umod case it self maybe. We need more answers. 

I thought as much @Wulf. There have been instances of this in the past (players randomly dropping or appearing on other teams). Is there a way to console command such thing? I don't know where to find the appropriate docs (sry still new to that part). What I mean by console command is to force or auto save player data (time)? Thank you for helping

That's definitely facepunch bug, nothing related to oxide.

Has anyone found a solution to this?

Anything yet ? There are servers that restart daily and the teams stay

this is being caused due to how you are restarting your server. it should be restarted normally. either manually, by using a plugin, or by using a scheduled command in RustAdmin or BattleMetrics.

It must issue the restart command, which will start the native Restarting in X seconds routine, or the quit command.

nivex

It must issue the restart command, which will start the native Restarting in X seconds routine, or the quit command.

What do you mean by that?
Every morning I restart my server via cron job:  45 4 * * * /home/rustserver/rustserver restart >/dev/null 2>&1
I don't know any other ways to restart, please advise.

It means to issue the restart or quit command from the server console. either is fine as calling restart will call quit after the specified amount of time. using a script that sends the command to the server console is fine too. otherwise the script should not be used as it is likely just killing the process instead. you can verify the former if you see the normal shutdown messages.