Some references in Frossel's exterior cells respawn despite it being a no-reset dungeon. They should have the 'DLC2FrosselZone' encounter zone setting added.
0401C4FB: Barrel.
0401C4FD, 0401C4FE: Bandit and Riekling spear. Not sure if these are meant to be linked together, and if the body gets culled by the engine at some point. Regardless, the corpse shouldn't reset and neither should the spear.
0401C509: Coin purse.
It's questionable whether the rest of these need to have the encounter zone setting. For some reason FrosselExterior02 isn't included in the DLC2FrosselLocation record. I have to wonder if that's was an oversight by the developers. There are a few other references that would need the encounter zone setting added, provided this exterior cell was meant to be part of Frossel.
0401C4FF, 0401C500: Bandit and spear. Again, not sure if these should be linked, and if the body is ever culled by the engine.
0401C501: Another Riekling spear. This one placed on the ground nearby.