Vehicles Not Spawning

Vehicles consistently refuse to spawn on various maps. Approximately 50% of games have one side with all vehicles and one side missing helicopters, ex: New Sorbek City or Manhattan bridge. Games are frequently extremely one sided because of this.

Its extremely frustrating that this hasn't been fixed or even acknowledged by EA and instead we are talking about ticket counts and movement changes.  

Vehicles are a core part of battlefield, so how about we get them to actually spawn in?