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Because of file size limitations I had to cut out the beginning in which I show that that piston is a sticky piston too.

I was testing something in a creative superflat, when I tried to make a clock using a sticky piston and two observers. The piston is at y1 which seems to be the problem. I was able to replicate this at different x and z coordinates, but not y. Also a different way of transferring power did not seem to help. As long as the block is pushable this occurs.

What happened was that the piston spat out it’s block, which is not supposed to happen in bedrock.

I have not yet tested it in a different world. 
will add more footage soon.