Here are the bugs that I have found :
1. The entire energy net quits when a frame moves. This means that all machine and all wire must be removed and replaced, or the game must be restarted. This is impossible to do automatically because a wrench will not work inside a deployer.
2. Nuclear Reactors Cause a crash when moved.
Not a bug : Teleporters continue to work, however, the teleporter aboard the frame can only teleport TO the fixed teleporter elsewhere. You cannot teleport from the fixed teleporter back to the mobile one. The secret to making it work is to carry a frequency linker. When you're aboard the frames vehicle, use it on the teleporter after moving the vehicle, but before you teleport back to base. Beam back to base. Once you want to return to the vehicle, use the frequency linker on the teleporter at base and it'll know the new coordinates of the mobile teleporter. Piece of cake.
The first 2 bugs I am sure the IC2 team knows about : what other bugs are there?