If you stand still for a few minutes, your character becomes a statue

[xymo]

Uncle's bones are not doing well

 

[xymo]

You can do this in any pose btw. You can look up, ALT + TAB, return in 5 minutes, and your character will be staring at the sky

 

[acidente]

Just tested, it didn't happen in my computer.

 

[Crusty]

I think this is from alt tabbing, not from going afk

 

[xymo]

I think this is from alt tabbing, not from going afk

Possible. I tested it with other characters, and the behavior persists. I suspect it starts happening at the same time you'd get kicked from the game for being AFK, while that can't happen in Sandbox mode