Trigger action not seen in multiplayer

I made a new base with Suntsag's Marsten Mat mod and used a trigger to remove trees along the new runway. When using thus mission in multiplayer, my friends could see the trees that the trigger removed while I had a clear view. When my friend taxied up to it the trees stopped his progress. Any suggestions or fixes?

DCS bug, a lot of thing do NOT work right in MP eg smoke, radio beacons