In the preview, I have now several times observed what looks like a packet of water or crude oil being displaced out of its pipe and into a neighboring tile. It is possible this happened before as well, but if so, then far less often. I cannot really be specific under which circumstances this happens, as I only did see later when there was liquid in places it should not be and no reason for pipes breaking. On one instance this also happened in a place where dupes have no access, so they could not have repaired a pipe. Yet no breakage was observed. This may be an instance of the same problem with random stuff materializing in compactors or not.
Since I have no specific evidence, just a general observation, I am filing this bug to that others that may have better evidence can add to it.
No idea. Just let the game run?