piston-retraction issues
MC-93631Pistons pop off blocks attached to their back when retracting
Fixed
MC-143508Some gravity affected blocks can fall through extending and retracting pistons
Confirmed
MC-164769Sided up and activated pistons with redstone block do not update (again)
Duplicate
MCPE-63777Moving blocks are instantly waterlogged if there is water above
Incomplete
MC-181417Pistons & Sticky Pistons stay extended when powered from above
Duplicate
MC-218584strange piston behavior when powered from above
Duplicate