Happened again in the new game I started today: things queued up, wood block still on the workshop, carpenter not crafting (idling, in this case). Only common factor I can think of is that I again had a Weaver Spindle in the queue. Also, this was the game where I had no wood in my stockpiles (but plenty outside it) and all my builders were also idling. There was wood in the stockpile when I noticed the carpenter idling in the game from this topic, but it’s possible it wasn’t there when the workshop bugged out.