1.19.2forge 43.2.6
when modernfix installed with connectedness in the same time,connect texture support by connectedness can't work,such as it still have gaps between glass block

Can confirm, there isn't any connected textures when ModernFix is active.

you guys might also got rubidium installed? if that's the case add mixin.features.chunk_rendering=false in the rubidium-mixins.properties config file