Every time I send AI divers to swim into the bay at Agia Marina (with a vue to enter the storm drain thingy there), they magnetize to the lighthouse and swim under it (glitching through the base) and then just run around inside it glitching. No matter how strict I am with waypoints or formation, combat mode, ect ect, they ALWAYS swim straight to the lighthouse and get stuck. They can't avoid it. They will never swim past the lighthouse and to the land near the first bridge.
This is probably a low priority glitch, but it could be that it affects other places and objects in the map too. {F18454}