(Presumably) After the latest patch (2.00 platform update) other players and I frequently notice the sudden disappearance of vehicles that are bought. This happens quite frequently (3~5 times during 5 hours of playtime). This is potentially game-breaking since in the middle of battle your vehicle just despawns and you and your crew die. Sometimes you see an enemies' vehicle disappear too out of nowhere.
It pretty much ruins the experience of Warlords (an otherwise great game mode) because you end up saving your CP for a long time only to see it go up in smoke.