Duration of a ride not right in the new feed

I wanted to know how long I was zwifting per day and write in in my excel sheet.
If I did 2 or more activities I simply added km, hm and time.
But I stumpled across a bug that seems to add the time of a warmup to the main event.
See here:

On the old feed it seems about right. (the small difference could be the time I waited in the startin pens)

Please fix this bug in the new feed.