I'm on PC experiencing this same issue on my multiplayer server. Usually stopping & restarting the server makes them start to spawn again, but eventually it stops working. The past week its always been 10 minutes maximum that it would spawn before stopping; after testing again last night with the 1.18.10 update, it was working for a few hours straight and then stopped again. Leaving the area / de-loading the chunk and returning does not fix it for me. Going through portals & back also has no effect on the issue.
I'm on PC experiencing this same issue on my multiplayer server. Usually stopping & restarting the server makes them start to spawn again, but eventually it stops working. The past week its always been 10 minutes maximum that it would spawn before stopping; after testing again last night with the 1.18.10 update, it was working for a few hours straight and then stopped again. Leaving the area / de-loading the chunk and returning does not fix it for me. Going through portals & back also has no effect on the issue.