The new variable redstone strength is having some strange effects on certain blocks. When an object such as a weighted pressure plate or daylight sensor is placed, hooked up to a line connected to a row of pistons, and slowly increased in power, The redstone seems to cut out for a split second, causing the next piston to get stuck in a position where it is both extended and retracted at the same time. Which pistons get stuck is 100% reproducible every time the machine is reset, but changes when the machine is moved or rotated.
Please note that this is not a duplicate of
MC-127, as far as I can tell, as the pistons getting stuck seems to be a by-product of a bug with the redstone, not the actual bug I am reporting.