Fix Bugs When Mining

so basicly i was in a public survival easy world when i started getting this weird thing where i would take damage in certain areas and i was underground 5 blocks deep and then i got kicked for being idle too long when i was typing and i rejoined and then i went in the same area i took damage from and it was normal again was this a hacker or a bug please investigate wut happened then i come above ground and the sugar cane i planted on grass blocks was gone!!!! idk what is happening but if i get a creepy error code im never playing it again