As much as I appreciate seeing Optifabric updated, I regretfully have to report a crashing issue. Mod combinations I've run that have resulted in a crash when pressing T to open chat or opening the Options menu are:

Optifabric-1.12.0
OptiFine HD U H2 pre1
Fabric Loader 12.5

Optifabric-1.12.0
OptiFine HD U H1
Fabric Loader 12.5

Optifabric-1.12.0
OptiFine HD U H1
Fabric Loader 12.0

I just came here to report this bug. I have the same problem with the same mods.

Same problem