Illager Mansions (*seemingly any vanilla structures, besides villages and nether fortresses, actually) don't spawn at all, using the Locate command results in infinite lag

Self explanatory. Newest Climatic Biomes 1.12.2 with BoP, Ice and Fire, VillageNames4, Lost Cities, Recurrent Complex and newest forge installed. Only Climatic Biomes generators cause this (BoP, Vanilla, Lost Cities, generators work fine), both climatic_vanilla and climatic_realistic are broken.

[BlackJar72]

Mineshafts and ocean monuments definitely generate, and temples, wells, and igloos definitely generate. The locate command may be broken, though I'm not sure how it could be fixed.

Woodland Mansions are a problem, they only generate in a few biomes and are placed by checking random places over and over until finding one. Unfortunately with the mod this requires planning the whole continent, so looking for one can lag for seconds to minutes. I tried adding an option to make them more common, which helps but only works in some Java versions and operating systems and not in others.