In lone story. Right before the kullervo update, don’t know if I will ever be able to reproduce this.

The chest bugged on a house, then the host left. After host migration, it wasn’t unbuged, so I left to the dormizone. I then launched the lone story again and instead of getting to the cave, I instantly spawned at the place where I left, with the chest open.

The remaining player after multiple host migrations got unbuged, and I joined over him with my story quests it seems.

And so the screenshot above.