Visual Bugs for Blossoming Trees.
All Trees in Optifine (Including Biomes of Plenty's) are sort of transparent if you toggle Smart in Optifine but Blossoming Trees aren't. It shows it's Fast version of Trees not Smart which is annoying since all leaves are on Smart texture while Blossoming Trees aren't please fix. I'm using version Quark-r1.6-179 in 1.12.2

I can't help you with optifine stuff, sorry