My experience is the same.
If you are within what appears to be “render range” of the meteors when they strike the ground, you can successfully see them and mine them.
When you are outside of render range when they fall, you will see the smoke where they hit, but they do not show up on your game client. Further info: if you try to walk at or through the smoke spot, the game client will hitch or rubber-band at the meteor spot.
As Nuria describes, for your best chance at success, position yourself in the middle of a spawn impact zone prior to the timing of the spawn for the best results.
What this tells me is that the game client is getting information about the smoke trail location, but it is not getting a reconcile / render update for the actual meteor node itself. When you try to walk through the space (game client shows no obstructions / collisions), you begin to bounce and rubber-band because the game server does have a collision flagged at that location. As such, the game client allows you to go there, checks with the game server, and then bounces you back because the game server cannot place you there - and provides that update to the game client, pushing you back…
I had hoped that this “invisibility” to the game client would not prevent harvesting. When you swing a pick at the smoke motes, there is no harvesting of the node on the game server. There is something on the game client side of the equation that is preventing this.
This seems to have to do with the game client’s rendering and derendering, memory space, etc. There have been times when I was in the spot of a spawn, died, respawned at a bed roll outside of render range but not TOO far away, and I could come back to the nodes that were still present and harvest them. If you respawn too far away, the meteors will be invisible / gone upon your return to the area.
I hope that this detail is helpful for improving the spawning and the event.