From my experience, this usually happens when the GPS signal isn’t strong or the device isn’t calibrated right. I just check the signal and maybe restart it, and it mostly works fine.
Yes, I've seen similar issues before. In some cases, it was caused by a temporary software glitch or corrupted activity data. A restart of the device and checking for the latest firmware update helped resolve it. Could you share a screenshot of the abnormal values you're seeing?
