If landfill was placed in a version prior to 2.0.7, then it cannot be removed in 2.0.7 while landfill placed in that verson can.

If a spidertron shoots a explosive rocket and hits itself or other spidertrons it damages it. Because of this if you go into a biter nest with an spidertron it will pretty quickly kill itself. Since this was not the case in version 1.1.110 and is not mentioned in the changelog of 2.0.7 this probably...