Here's a little hooker on the 59 mile bug:
In my PBEM game vs. Pompac, he had several IJA infantry units trying to move across clear terrain and they got to 59 miles and hung. He ignored this for a long time. Suddenly, the units moved - one unit moved 1 hex, the second unit moved 2 hexes all at once, materializing on the road leading out of my Chinese city. Of course, this happened at the same time that another unit moved in on the opposite side. The effect was a unit "beamed down" in my rear, cutting off the city, the supply line, and line of retreat!!
Fortunately, Adm. Pompac, being the gentleman that he is, allowed how this was not exactly fair, and moved the "beamed down unit" out and let me get the supply line open again (while suspending the attacks on the threatened city).
Other weird movement stuff: units ceasing to march for no apparent reason, units reversing direction of march (for no apparent reason,) slingshotting units N to S, slingshotting units E-W, infantry units zooming across clear terrain hexes in 4 turns, and other fun stuff!