Welcome to modding Skyrim in 2024. It’s not a bug; it’s a feature.
But for now, the ritual remains.
Go to Steam > Right-click Skyrim > Properties > Installed Files > Verify integrity. Wait 10 minutes. Then open MO2, uncheck the new Update.esm , re-download the 1.5.97 version from your backups, and rename it "Update - Fixed." Then run xEdit, clean the ITM records (identical to master), restore the water flow, and recompile your Bash Patch. Download Update Esm Skyrim Pc