It is the second watch I bought. I returned the first one for the same issue.
I have it on my left hand, and it counts random hand movements as steps, for example when I'm driving. I have XIaomi MiFit 2 band which doesn't have these kinds of errors.
Moreover, it also adds those "steps" to the total distance, even though I am not moving.
Is this a known issue, or did I get unlucky twice in a row?