Giant spruce taiga hills biome generate normal redwood trees ( with only leaves on top) instead of spruce redwood trees ( with more leaves shattered around the log)

It is hard to reproduce because I can’t view the biome where I’m in. So I had to use a Biome finder (ChunkBase) to see what biome I’m in. Only the tree generation is bugged, water color and the hills work fine

Steps to reproduce:
1 Find a seed with a giant spruce taiga
2 Search there for the hills variant
3 look if you can find spruce redwood trees

Expected result:
The hills biome generate spruce redwood trees

Observed result:
The hills biome generate normal redwood trees.