By the way, seems like no one chest was supposed to store coal, so it's weird too.

Oh. Thanks for help and quick reply! So, I basically need to find that chest and break it, right?
You could try, but I am not convinced a chest itself is the problem. The devs will need to take a look at it.
Okay. Thank you again. We are testing now and seems it stopped happening for some reason ...

Oh. Thanks for help and quick reply! So, I basically need to find that chest and break it, right?

We've played on a server and started getting a crash while saving.
We tried to host on another players computer, but the crash still happened.
After you load that savegame you should play around 3-5 minutes, drive a car or something like this (we've tried different stuff) and then autosave will ...