During gameplay of my modpack in a wintery biome, it seems that fluids somehow caused an exception with the chunk rendering of betterfoliage.

After spamming the above in the log over the course of what seems to be sixty or so fluid blocks, the mod eventually gives up entirely with a crash:

The only mod that changed in my modpack between then and now is that I added Journey Map. Did Journey Map somehow throw this?

also, now every time I load into the world, it crashes with the same issue. A new log generated and VanillaFix actually pins the blame of Better Foliage now.

Your mod's Octarine Core is panicking here.
crash-2020-11-15_16.55.56-client.txt

I can confirm this is an issue that can occur with village names, and infinite trading, in certain wintery biomes with flowing water. It is currently the newest version for minecraft 1.12.2 (2.3.1)

I will continue researching, now having found the village names mod misbehaviour

Confirmed: twas an issue with Villager Names 4 and Infinite Trading. these two mods were colliding gl cycles and causing better foliage to crash water rendering from the state leak

GLstate musical chairs, I tell ya.

Closing this irrelevant issue now.