I've been riding with a new Edge 530 for a few weeks. For several rides, I get elevation profiles like the one here, where it stops updating elevation after some point, sometimes until the end of the ride, or once it did this and was just flat for a while and then started again.
https://connect.garmin.com/modern/activity/3809965573
The device shows reasonable elevation while riding, and a reasonable total ascent / descent, which also shows in the stats on that page, so it doesn't seem like a sensor problem.
Is this a known bug?