Found a bug in Apple Watch

Hi guys!
I found a bug on Apple Watch that could be performed on any watch devices. but I don’t know where to write it. When I communicated with official store they said that they don’t provide this information further.
So, if you switch time on your iPhone a day forward and then go back to normal time, you will see a collapse with columns in Activity kit. Everything else will be fine, so those columns are not corrected and new activity will not be tracking, including new trainings, warm-ups and so on. If you will go for a training than, you will see 0 calories despite your pulse.
I have a video and photos of this bug if you need it.
Thank you.

Ive run into this bug as well. It's supposedly because the fitness app is linked with time stamps.It's been really difficult getting someone at Apple to help me with it. Will report back.

Found a bug in Apple Watch
 
 
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