Since upgrading to BC 7.0.9 yesterday, my existing pipes connected to machines and inventories have invisible blockages, wherein water/lava/whatever won't move past a certain block. I have to destroy the affected pipe and then place it again, wherein the fluid will continue to move past as it should. I already went through once and "fixed" all my pipes by re-placing them, but now upon logging back into my world again the problem is back. It seems to be corner pipes and turns that are affected most.

Is it just a rendering issue? That's important. If yes, then I am aware of this one.

Have the same issue and I guess its only a rendering issue.

My apologies. After further testing, I've confirmed it is indeed only a rendering issue.