Definitely not resolved - if anything, worsened by the arrival of 1.18 update. When our 80-seat server is busy (and sometimes well before it is anything like full) we are discovering local vehicles of all kinds in crazy positions - often mid-air, 40ft up or thereabouts. Some players report seeing the vehicles in their correct positions, and can even control them - remote players will then see the 'glitched' floating vehicle begin to turn rotors, etc. If the player who's parked the helicopter on the ground then lifts off and lands immediately, *sometimes* it will be repositioned correctly for those players who saw it hanging on sky-hooks beforehand.
We also had a situation where a car was floating in the air, some players saw it floating, some saw it parked on the ground. It was exploded by someone who could see it on the ground, and it promptly exploded in TWO locations simultaneously (on the ground and in the air), viewable by ALL players. The airborne explosion was enough to kill someone standing below the 'non-existent' ghost floater.
We're also getting reports from people who have encountered 'invisible vehicles' that have been parked in the middle of roads or other random locations, which they've run into at full speed, causing explosions, death and misery. On examination of the facts later, it appears that the vehicles were not parked there at all, but somewhere nearby, safely off the road, and non-moving at the time of impact.