Affects Version/s: 18.104.22.168, 22.214.171.124, 126.96.36.199, 188.8.131.52, 184.108.40.206, 220.127.116.11, 18.104.22.168, 22.214.171.124, 126.96.36.199, 1.2.15.01
Fix Version/s: None
Device:PC - Windows 10
Something seems to be still wrong with the mob spawn rates.
It's fine for mob spawners, but for simple mob farms like a 20x20 platform 24 blocks above the player it's still off. I play in hard difficulty and there are barely mobs spawning inside my mob farm/trap. Ii tried multiple positions around it, but nothing really changed except an occasional mob drop every minute or so. The overall spawn rate seems to be quite different from the Java edition.
Mob spawners, like my skeleton farm around a spawner, works great though.
I attached (uploaded) the world, with the player right below the mob farm.
Sadly my world is 12mb big, so I uploaded it somewhere else: http://www.ta-sa.org/files/20170508_mob_farm_spawn_problem.mcworld
Maybe this is a duplicate of
MCPE-12422, but that one is just open for iOS and not Windows 10.