In Garmin Connect, I added a pair of shoes on August 8 and used them as the default gear for all my runs. Currently, Garmin Connect (web) incorrectly claims that I have 61 activities and 452 km on them. The mobile app correctly shows 89 activities and 679 km (cross-checked with a couple of other sites that sync with GC).
When I click on the "61 activities" link, select all the activities and paste them into a text editor to count them, it actually shows 89 activities.