I tried to fill out a bug report on this, but I just keep timing out. I've been going great for a while but now the server isn't responding hardly at all so I've had to fill this out here.
On Mission from Explore Hromi Cluster, I got Planet Z-678 O: Noncorporeal Entities.
There is the hard terrain, as well as the water table on the map. My entire away team actually spawned under the terrain level in the water table. I've recently seen other issues with NPC's and BOFFs that seem to "vanish" but are still seen on the radar. I think these are the same where NPC's are falling through the terrain to the table underneath. I was actually fired upon by an NPC and the beam came up from underneath me after he fell though.
EDIT: My apologies. I thought I was in the bugs forum when I posted this. If you would please move it, I would be very appreciative. Thanks, and sorry!