BYG's nightshade trees naturally generate with a few imbued nightshade logs, which are not chopped with the rest of the tree.

Wonderful mod, keep it up!

Edit to add: it also seems that some BYG trees (bulbis, ether, fungal imparius, maybe some others) generate with wood instead of logs at least part of the time, and adding those wood types to the choppables config doesn't seem to work.

Hey, so sorry I missed this! For the imbued nightshade logs, the best fix would be for the BYG folks to add the "minecraft:logs" tag to those blocks. That's the main thing TreeChop looks for to detect logs.

For adding blocks to the choppables config, what version of Minecraft are you using? This currently only really works for Minecraft 1.18.2 and later (unless there's a bug...). At some point I'll add better support for weird edge cases like the BYG trees you mentioned, but it's gonna take some time.