Describe the bug
Uh, I'm not even 100% sure this is a Dynamic Trees problem, but the other day when I was terraforming with WorldEdit, there were some... problems? I was creating spheres with a brush and I was noticing it was being offset a random number of blocks in any direction. I was assuming it was just grass I didn't see or something, but I moved onto a new project the other day and when I started using the smoothing brush from WorldEdit, there were these holes that formed where l used it and they don't smooth over. In both of these scenarios, I had mass removed dynamic trees from the Giant Spruce Taiga biome. I hadn't terraformed in that biome since I added DT and it's the only one I've noticed those problems with. It seems like these "holes" used to be where the trees were. The first scenario happened on a single player world and the second was on my server.

The holes:

Mods List
https://pastebin.com/X9RGTnjF

Forge 1.16.5-36.1.10

How did you "mass remove" the trees? I fear if you used commands to clear all the branches world edit would've done it in a way that leaves the "trunk shell" blocks (blocks around the centre trunk that are simply meant to provide a collision box for a thick trunk). I suggest you clear all dynamictrees:trunk_shell blocks in that same area and in the future use /dt purgetrees [chunkX] [chunkZ] [chunkRadius] in future to properly clean up all tree-related blocks.

Oh, god, thank you so much lol yeah, I removed them using WorldEdit. Having used it for as long as I have, I should’ve known it was something like that! Holes are no more :)