The infinite lava tank seems to be draining. If I go to spawn then /home it is full again, but immediately drains out. F3+A doesn't reload it.
Now it appears to be full of water. People on the server think someone is actively pumping water into the tank.
Sad to say that Spawn loading has been an issue since the first 1.10 pack launched on MyM. And if Spawn is not chunkloaded, then the SirWilli tank will not stay full of lava like it is supposed to.
more then likely a side effect of SirWillis turning off the chunkloaders to fix server crashes, so it probably has to be replaced to make it kick back in edit: SirWill fixed it.