I think he's referring to the entry/exit arrows problem we found and fixed for WinSPWW2; it's also present in WinSPMBT. The top left (and bottom left?) entry/exits don't seem to work right either (was also fixed for WW2). At least not in a game i've got going.
A test scenario I'd made up for my COIN school. I couldn't get the Air OPs to come in any way but right to left. I tried other scenarios that involved air units, and they worked fine. I concluded that the scenario is corrupted, and the game works fine.