_I remember that one time I was wandering in a mine and when I got out I was scared MB) because I thought that I will end up getting killed by mobs, but I got home safely and On my way there I realized that all mobs disappeared. I thought that it was some sort of random, rare event, in witch mobs don't spawn. "Ok...I am happy that I got home safely".
_
A few in game days later I realized that the world was broken! I tried screaming in the middle of the desert for mobs but none came to bite me.
*The funny thing is that mobs that previously spawned remained in the world for example I found a few creapers close by my house (200-300 block away or so, but surely they were in another chunk).
*
Anyway I would atach the map but the file size is over the permitted 10MB
Thank you for your report!
We're actually already tracking this issue in MC-155289, so I resolved and linked this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature in the future to see if the issue has already been reported.