I always enjoyed the ability to rotate the blocks.
This a bug?

In regards to deco blocks, why cant we rotate them?
How is this a bug?

Sounds exactly like T767, which currently has a low priority. Hopefully more reports on this will draw attention.

I've noticed the owners loading from blueprints as well.

Occasionally it seems that the shops will also delete the owner, and then assign the first person to interact with it as owner.

I may have some insight on this.

When I flew the "top" of the turret whose base disappeared to the shipyard, the shipyard would not register that anything was even docked.

I'm still having this issue.

Actually crew will clip through the floor and fall hundreds of meters into space. Then they will teleport back to fall again in an endless loop.