Pistons make stuff explode just like in SE1/act wierd

So i tried playing with the new blocks, but so far pistons have been acting pretty weird.

The situation was:

I was building a rover with a drill (so drill on wheels) pointing downwards with following pattern:

ll

ll

ll

ll

O

D-D-D-D-D

Where

ll - piston

O-rotor

D-Drill

The idea was to slowly lower the pistons, let rotor spin, and drill mine out a circle, just like in SE1

But pistons, that seem to handle the weight just fine - at least they had no problem retracting - seem to "glue" to voxels, so that you cant just lift them a little, you can only lift them all the way back (i could only get like 2 meters or 0 meters). When i try to lock them "in the middle" they teleport back to touching voxel - which in turn wouldn't let the rotor spin. Again, pistons had no trouble retracting back far enough for drills to not touch the voxels at all.

After trying turning them on/off for a bit, the whole thing exploded, just like in (early) SE1 - i thought this has been fixed years ago

Then i quit to menu, and try load my exit save (not the previous one, but the one with the damage)

Loading the exit save crashed the game - no error message. (i wanted to load to put a screenshot here)