Minecraft wiki entry for Development_versions, associated text: Fixed Barrier Block hitbox missing when not holding a Barrier Block (MCPE-137646).
Fixed Barrier Blocks not blocking projectiles (MCPE-137646).
Fixed Barrier Blocks not blocking player interaction with blocks behind them.
Shulker Boxes now drop their contents when destroyed as an item (MCPE-129470, MCPE-87877).
Bows and Tridents are now held more similarly to Java Edition (MCPE-126717, MCPE-44418).
Grass and water block tint colors are no longer slightly randomized with noise.
Abandoned villages are now far rarer, more closely matching the Java Edition (MCPE-71769).