There are duplicates when importing from Polar.
One says source ~ Polar ~ Strava, other just ~ Polar.
Respective workouts are
https://intervals.icu/activities/i6419054
https://intervals.icu/activities/i5936552
There are other days as well.
What happens if athlete uses 2 devices at same time, for example, Polar bike computer and Garmin wristwatch?
There is one cosmetic bug as well, I cant replicate it anymore, maybe its half-fixed. Some athletes I coach changed their nickname after registration form lowercase name and surname to Proper Case. (Athlete with Polar bug is one of them).
On calendar page top left corner it is as it should be
while on athlete selection page it is not.
How did you end up with those dups?
If you use two devices you will get dups because the activities are not the same. No way for Intervals.icu to know which one to keep.
That was Polar connection with Garmin Connect which was later disconnected.