That's what I'm saying. From what I understand, ColorOS only shows notifications on AOD / Lockscreen for chinese apps. People were saying they fixed it by manually allowing notifications per-app in settings, but even doing that didn't fix it for me.
I would be down to try it for a few minutes just to see if notifications are fixed but going back to my system isn't as seamless as usual because well, TWRP still doesn't work on Android 12 lol. I use Swift Backup to restore my apps but that's not as seamless as TWRP backup.
I swear, every time I try COS, I'm like wow what an amazing ROM experience (after you debloat it) and then after I spend hours setting it up, that's when I notice that something doesn't work lol.