Thank you for reporting this. A new build will be available soon. And since you found an issue, I am giving you a bug spotter badge!!!
Bryan Sanders add it to the wishlist! https://educommunity.minecraft.net/hc/en-us/community/topics/360001721971-Feature-Wishlist
Dominick can you take a look?
Bryan Sanders you got it! The only thing I'd add is that if your licenses were purchased in the Store for Education or through the "unbundled" O365 option they would do license assignment in the S...
Jesse Nwajiaku can you give us more details? Which version are you using, which mobs are you able to see and what commands are you using? Thanks!