Entity's behavior towards pressure plates have changed

Redstone can't be place on top of observers.

Buttons,Signs,Doors Break whrn importing mcworld

Pistons and repeaters set with a delay. Don't power get powered by observers

Mobs on boats can hit you two blocks away

Dispensers/Droppers won't spit out its item if,its powered by a quick pulse

observers activate when entering world

Sticky pistons can pull and break comparators..

Redstone lamps has a delay when turning on/off

Observers do not detect torch burnout

redsone torches do not prevent/lock hoppers from taking items.

Walking sounds when flying

The repater delay changed in mcpe 1.1

Sticky piston does not retract the block sometimes

Keyboard does'nt appear if you are typing a command.l

Repeater delay bug