As seen on an Official server from a streamer.., and also pointed out in this ticket for Underground loot, https://feedback.bistudio.com/T185760
Loot is not following it's configured spawn locations.

The dynamic Containers are spawning Glass and plastic bottles (Seen in at least 3(make that 4 now since starting this ticket) with more than 1 bottle) and other loot not configured in the types file.

<group name="Land_Container_1Moh_DE" lootmax="3">
				<usage name="Special" />
				<container name="lootFloor" lootmax="3">
						<category name="weapons" />
						<category name="explosives" />
						<tag name="floor" />
						<tag name="shelves" />
						<tag name="ground" />