I was having the original issue of mobs not spawning at night, even with rifts. But now, after the 1.20.8 update, theyre spawning in the middle of the day and not even close to rifts. I cant even get my stuff done during the day right now because they just keep spawning, sometimes directly in front of me. I had a shiver spawn inside my animal pen over 100 blocks away from the nearest rift, and a drifter spawned inside my 4x3 dirt hut with a torch inside on a torch holder. It has gotten bad enough that even grabbing creative mode and the admin sword isnt enough because they immediately respawn. I wanted more spawns, but only at night please!