Still problems with 12.01 update
After update Logic pro 12.01 still no sounds in session drummer. Called Apple Helpdesk still no solution.
Mac Studio (2023)
Yes, it's still an issue after the update. I have confirmation from others that are having the same issue.
And of course I tried reinstalling the libraries, and even installed everything available, just in case the library was somehow moved to another collection, and I checked the disk for errors and everything else that we usually check for ... but since many many others are experiencing the same, it's not a user error. We just have to wait for an update to fix it.
Mac Mini M4/Sequoia here. One of the others I checked with is on an M1 Macbook Air.