Elevation not appearing reliably in My Trips

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/report-a-bug/elevation-not-appearing-reliably-in-my-trips/
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This has been happening for at least a few weeks. Elevation data does not appear in My Trips anymore. The other graphs work normally. The problem occurs on the desktop website and iOS and iPadOS apps. If I go back to older trips (like November 2023), the elevation appears.