I wanted to report an issue that I observe from time to time on my activities. Occasionally, when I finish a run and upload it to Strava it shows that I have some achievements there. Then I open the run and look at the list of segments and see a smaller number of achievements there.

For example, today I had two achievements shown in the feed - two second best efforts on segments. But the list segments shows only one second best effort. 

In the past I assumed that could be due to hidden segments. But if I look at hidden segments on the web, I get yet another number of achievements, that is different from the number of achievements in the feed.

It would be good if Strava engineers sorted this out.