When the loadout of a editor placed unit is changed, "leaked inventory containers" appear. These are invisible inventory container entities spawned at [0, 0, something] that don't have an objectParent associated with them. They will never be deleted, since the cleanup system forgets about them.

If the unit is configured to have a vest by default, two of these leaked inventory containers appear. If not, only one will appear.

They are apparently network synced, so this is a problem.

They can easily be detected with the following command:
(-1 allObjects 4) select {isNull objectParent _x}

They can not be deleted with deleteVehicle, so an engine fix seems necessary.

Apparently this is from the addGoggles command, which has this known issue.