Tom Forsyth wrote about a fun bug in a Half-Life 2 reissue, of a particular flavour I have never heard before.

So I started it up, selected new game, played the intro section. It’s a fairly well-known section - you arrive at the train station with a message from Breen, a guard makes you pick up a can, and then you have to go into a room and... uh... I got stuck. I wasn’t dead, I just couldn’t go anywhere. I was stuck in a corridor with a guard, and nowhere to go. Bizarre.