Seed: -2246345335780047347
Coords: 12982, 58, 1648
Seems to only happen to the long leaf blobs. All the other parts of the tree are fine now.
Drullkus commented
It seems feature gen is not deterministic with Random. I regenerated the tree at this spot around 10 times, got all different trees, then scanned like 20 more. It might be a weird fluke of worldgen that I'd say is safe to ignore