Weird Node

[Cage]

I have noticed in MT5 that starting at -29 there are thousands of single nodes filled with water. Here is the weird part, when caves and caverns are created and one or more of those blocks is open a black semi-transparent pours out of that node. The black substance runs like water but does not register as anything. A sponge does not effect it, only finding the open node and plugging it up stops the flow. Once the node is plugged up the liquid eventually disappears, or tunes into flowing water that too will disappear after a while. Maps created with MT4.17 do not have these node anywhere. Is this a bug or is it something new in MT? It's not a really big deal, just makes it really hard to do any mining when every cave and cavern is flooded with this black water like substance.

[Cage]

I found what was causing the weird nodes. Turns out the luxury furniture mod was the culprit. It has oil that flows causing the thousands of nodes. I removed that part of the mod and all is well again.