Badniks clipping into eachother causes them to stop in place.
for some reason, when badniks clip into each other, they're getting stuck in each other instead of going through like in 2.1 and below.
This happens in both 2d and 3d modes, but can cause problems in 2d mode.
I have included gifs in the MB topic for the same bug. https://mb.srb2.org/showthread.php?t=47812