The former option. I like way too many posts, probably.
- here’s an explanation for the floating bench and gravestone. (Although when that happens for me, usually with tables, I am at least able to move it again afterwards. Perhaps an explanation for them not moving that one is here; alternatively they may suffer from the same issue as dining tables in the last release (but not the fancy chairs, for example) described in that same topic.)
- Floating eating villagers were seen here and in the post after.
- Frozen goblins are reported here—be careful with those, because your footmen will attack them and keep swinging at them in vain, effectively getting your footmen stuck to die of starvation.
- Invisible item in crafter’s hands.
- Fog of war not going away—was yours also at the map edge?
- Sleeping on scaffolding and through doors etc.
- The carpenter going off to the goblin stockpile to retrieve wood I think is due to the goblin stockpiles not being as properly differentiated from player stockpiles as perhaps they should be.
- The carpenter working on the building I think is not a bug, unless they still had crafting jobs queued up. The carpenter is supposed to help with other things when out of carpentry work; the footmen don’t do this, so if the rest were all footmen, the carpenter would be the only one to ever get any work done on building houses and such.
I know you know these were already reported (or some of them, anyway), I just thought it might be nice to link you there so you don’t have to look yourself. Also, it will show up in the relevant topics, so that your topic here will serve as a kind of confirmation for these bugs 
especially for the new alpha, as you mentioned in the video.