I have a few beacons around my base and after updating to 1.18.2 the beam does not render until I get close and look down (around 5 blocks) after that it stay visible until it's outside render distance.

I recorded a video: https://youtu.be/3h4UU5nXpbE and attached the world file

When flying around you're almost always looking down so the beacon render sooner but look how I approach the beacon at 0:40, I was close enough but it only appear when I start looking down.