When running a internet or Lan multiplayer server the AI who usually use all vehicles in instant action mode, refuse to use certain Vehicles in Multiplayer.
So far from testing each map: the AI use the atst and speeder bikes on endor, the atat, atst, and air speeders, on hoth, the atst on felucia.
But the AI refuses to use: the hover tanks on Felucia, kashyyyk, naboo, polis massa, mygeeto, and the speeder bikes on kashyyyk.
The AI refuses to use these vehicles if on a multiplayer server.
I've never ran into this issue, but it sounds like something I've heard before on another forum.
The issue can easily be reenacted by hosting a simple lan server on said maps with vehicle problems and witnessing the bots running past perfectly good hover tanks.
I wish someone with the modding skills would please make a patch to fix this problem.