[Problem with the protection of the trader.]

just to add my two cents... I'm 99% sure that this is already being exploited.

 

The bug description sounds exactly like the problems on the TFP public server in july:

Trader Joel had destroyed terrain inside his compound (e.g. due to explosions), workbenches were placed down, the door to his private rooms was open and more.

[Vehicle in ground [...] Chunk Regen / Wrong Entity Chunk Position]

I finally managed to read this report completely

 

About the drone, I think you might be on the right track here.
The two people who posted logfiles in the threads I linked above also had a drone in their logs.

 

(I personally don't have this problem myself, but I don't have a drone either 😉)

 

[Vehicle in ground [...] Chunk Regen / Wrong Entity Chunk Position]

There are more people atm. with a similar problem.

In case you need more logfiles, have a look at these two threads: