Having a no-go on reproducing this atm, checking out alternative reproductions, but if anyone has any other information that would be appreciated.
Went to an area with a lot of trees
Shut the server down, deleted the region files
Loaded back in, trees were fine
Went to an area with a lot of trees
Destroyed a whole bunch of them
Shut the server down, deleted the region files
Loaded back in, trees were fine
Went to an area with a lot of trees
Destroyed a whole bunch of them
Went to a region far away from that one
Shut the server down, deleted the region files
Loaded back in, went to the region, trees were fine
Erm, well okay then right after I posted this I found a tree that duplicated. Going to say confirmed, will do some more investigation into this for other cases and make a report