This just happened for the first time ever.
I did 2 workouts today that finished about an hour ago.
I used an elliptical for 32 minutes and then I walked on a treadmill for 65 minutes.
That second activity somehow doubles up in reports. The first (elliptical) activity did not.
When I go to the full page view of my activity, each one is only there 1 time as it should be.
However in reports, the 65 minute walk appears twice.
Initially, I had the walk at 4.44 miles. To differentiate them, I changed 1 to 4.45 miles and the other to 4.43 just so I would know what I was looking at.
If I click on one of the 2 walks, it appears as it should. If I click the arrow to go back 1 activity it takes me to the elliptical activity not to the second walking activity. Therefore it is really only in the database 1 time but is appearing twice in reports. That strikes me as an index problem.