I try to fill a tank with any liquid (water, fuel), but instead of the tank filling up the liquid goes on the outside and flows everywhere. This is very annoying, since it doesn't allow you to use combustion engines unless you have a pump at an oil spring and a refinery, which in turn would make your small setup dinosaur-sized.

IS it a bug, though?

Also, I am using the latest NextGen experimental build for this. 6.0.0.62, precisely.

#1434, correct?

same issue.