I've seem to found a really weird bug and I've seen it happen in two places so far. I'm also using Community Balance Patch, but it appeared when I updated this mod.
Anyway so the first place this sometimes happen is when I have a unit who cannot move through jungle and I click on a jungle, the unit will teleport to a random place on the map.
The same thing happened once also when I had a unit who couldn't seem to find a path to a city I tried to attack so it teleported away.