I created a new 1.6 character to test this and the enemy respawns and the enemy respawns have not been fully addressed with 1.6 the wildlife you fight in the wilderness does not respawn at all, same thing as with the plants they will at first but after a while they will not spawn.
Now I am noticing containers not respawning, not the treasure chest but things like sacks, urns, crates, barrels things like that that will remain empty and if I dump some junk I don't want in one of these containers they will not clean up. There is several containers I've tested to reach this conclusion one is a wardrobe on the second floor of the entry tower at Valtheim Towers, another is a bag in Deepwood Redoubt by the door to Deepwood Vale, another one is a end table in Deepwood Vale by the tanning rack and bridge.
