Describe the bug
Green leafy trees are an odd sight to see generating on a mushroom island.
Is this intended?

To Reproduce
Setup client with minimal modset; Spectrum, WTHIT, WMITAF, and dependencies.
Create a world with worldseed -1166828785
Travel to a mushroom island at coords 815, 71, -692
Observe oak trees with obfuscated block names and tagged as Spectrum blocks.

Expected behavior
Unknown, I was testing Spectrum for potential inclusion on my server. I have yet to explore its mysterious mysteries, but oak trees on a mushroom island are pretty conspicuous.

Mod version
Which version of the mod are you currently using?
Spectrum 1.2.6-1.18.1-midgame7

Screenshots

oak trees on a mushroom island are pretty conspicuous.

Definitely. I will see what I can do. Ty for the report!