I've tried on Chrome and Firefox to get Cross Validated to list users in the "leagues", e.g., https://stackexchange.com/leagues/65/alltime/stats/2010-07-19?sort=reputationchange&page=3 and most entries show the "circle of death" as in the image below. What is going on?
Note, a similar problem (where only the current user wasn't loading), without browser information, for different Stack Exchange sites has been also reported User profile is not loading Stack Exchange reputation league page
The issue is now fixed. Thanks for the report!
For reputation leagues on stackexchange.com, we load and cache users on a background thread that doesn't have the full site and user context available. This code is separate from the main Q&A app, so when we added a check in the method that validates profile image URLs that required that context, it caused a null reference exception that went unnoticed. 😓 We've refactored the checks, so all user cards are once again loading correctly.
I discovered that you can improve the reputation leagues page with a work-a-round. If you first go to the "users" page on the site...
.. you can identify the names of some of the users that are not showing up on the reputation leagues page.
Then, if you search for one of those users on the reputation leagues page, and enter their full username, the card will often populate (not always though). Once a card has initially populated, it seems to stick around even when you aren't searching for a specific user.
As I said, it's not a real fix, but perhaps it's a helpful workaround for some users in the meantime.
... maybe also a clue that will help devs figure out the root cause.
P.S> Interestingly, this workaround did not work for my own card.
bugtag since some sort of problem is confirmed. The evidence here is also helpful in the sense that three browsers, so far, are herein reported to have the same problem, making it more likely to be a source codebug, and not a browser problem.