Closed NPC's (Bandits) Spawning Under\In Tiles

In Giraffe Update 2 -

I have come across a total of 4 planets so far where bandit's are spawning underground/buried.

I found that they are easier to identify at night, if/when they have a flashlight - you will see their location because you will see a shining light beneath the tiles that looks off - dig down to it, and viola! bandits!

Dont know if this will help immensely, but im finding it's happening pretty regularly since the update on 1/26/2015

 

Please post screenshots of this behavior.

 

Do all pre-placed NPCs exhibit this behavior (e.g. surface merchant minidungeons or towns)?