With an iron sword I can barely kill a hostile or neutral mob. Approximately 1 out of 10 taps (on iPad, using a sword) damages a monster, and by that time my own health is pretty low because it can just continue to attack me. This seems to be an issue with the third person perspective only. It's as if it doesn't register my taps. Everything else works as expected.
Someone reported this as an issue in Beta 13 (MCPE-8562), but I can't find any other reported issue on it. Because that one was still in beta testing and supposedly fixed/resolved, I make this ticket.
Thanks!