Object on ground disappeared when character with followers spawned

[jojoknob]

I poured warm static on myself from a container on the ground and became a dromad with a caravan. A mob spawned where the container had been and the container disappeared. It is not under the mob nor visible if the mob moves, and it is not shown in my nearby objects.

[jojoknob]

The container subsequently reappeared so this may be a non-issue.