After enabling increased height some biomes like sandstone valley and painted mountains dont generate correctly (sand & other blocks are generated as grass) and these are not the only ones. It seems like almost all terralith biomes are affected in some way. will include 2 pics (one reference & one with the problem)

Mods : Tectonic & Terralith (discovered with a lot of mods installed but tested with on these two and same problem occurs)
ML: Forge
Game version: 1.19.2
Mod Version: 2.3.5a

Reference (Sandstone Valley)

Increased height enabled (Sandstone Valley)

Reference (Painted Mountain)

Increased height enabled (Painted Mountain (the grass is the biome))

P.S. I tried to get around it by setting it false and adding a separate data pack that changes the build height to 1024 and then using horizontal_mountain_scale & terrain_scale but while the build limit is higher and terralith generates correctly, tectonic does not generate past y319 and i am stuck with plateaus again.

#177 (comment)
This was fixed in Tectonic v 2.4.1

Ahh just realised 2.4.1 isn't available for 1.19.3. Not sure if Apollo plans to backport to 1.19.3.

Your probably right but it looks like 1.19.2 is going to get DH + Shaders support at least on forge (which didnt seem to be the case until now) so this getting fixed on this version would be nice.

The latest datapack version of tectonic "v2.4.2 ~ Datapack" unfixes this issue and many other changes that were seen in the V 2.4.1 mod version.

This is an example I found in my world with the datapack version... (this is supposed to be a volcanic peaks biome but its all just grass blocks. The snow to the side is jagged peaks as well).

From my testing it seems there is a VERY big difference from the tectonic mod versions and the datapack versions, like worlds with the same seed are completely different.

Known issue but due to the the small and still dwindling number of 1.19.2 users that are affected by this, it won't be getting fixed.