Broken Mods & CC: 21st Anniversary Patch, Feb. '21

Hello everyone,

unfortunately UI Extension Mod is broken in my game for quite amount of time. When I put it in my Mods folder, my game starts to bug, there are weird occurrences such as UI flashing. I was testing this mod even after this very update and those failures remain. I am unable to use Build/Buy, because after using, the UI disappears. The same problem seems to occur when using SOL by Kawaiistacie.
The rest of my mods ( I've got too many of them) seem to be working just fine.