Definitely something wrong with segments that I recently created. For one race segment, no leaderboard is shown at all, though I know for sure many other runners have completed the race and one can find their relevant activities in Garmin Connect but they do not appear in my segment. Another couple of segments does not show even myself as completing the segment though they are created as parts of the actual activities that I completed. This did not seem to happen with previous segments, at least I never noticed.
The last few days I have been noticing issues with segments when I am on GC from a web browser. Some rides will not show as crossing any segments at all yet I know I did. When I look on the iPhone App it shows me as crossing them.