A creeper that explodes near blinds causes the game to crash, I assume this is becuase of the unique way blinds work. It happens when blinds are down or up and I tested it with only beautifys nessasary mods and it still happens.
Pastebin has the crash log in it:
https://pastebin.com/PGkAy93b

Edit:
Upon further testing, even with "open from roots" set to false in configs it still happens.

This issue only happens in fabric and is not related to forge, it will be fixed in the next release.