Im running my own dedicated server with the latest version and since a few days it seems that there are no dino spawns in the Grave of the Tyrants cave. Artefact and Cave drops are spawning normally.
I tried dino wipe, waited for a long time and restarted the server but still not a single spawn in the cave. The other two caves are fine so far.
It also worked well before for a long time. The only change I did was updating the server version and deactivating the summer event.
After flying around in this area, I noticed that actually no Dinos spawned after the Dino