Yep. I’ve posted about my experience here, with screenshots, too. Same type of issue. World map showing one set of ilevels in one location, take a few steps down the street, and a different ilevel is shown altogether.
To clarify, mine don’t seem random. They seem to change based on where I’m standing.
https://us.forums.blizzard.com/en/wow/t/bug-ilevel-on-world-map-tied-to-location-of-character/783826