When a vehicle is added to the forum's garage at the bottom there 3 point with which have to be agreed to be able to add it, but I don't see anything, just 3 empty points.
When the vehicle is added it have to be approved to appear in the garage, which is OK. But if it is edited after adding/approval its like adding it for first time - again needs approval and vehicle disappear from garage. Or I didn't saw something like change/update button to confirm, but remember that select Edit as action.