In a match got hit by a few discs and noticed my stubborn stone kept dinging even though I was not dashing or jumping.
I didn't dash or jump at all since the match started since I was against a white belt.
Nor did I do either in the gym prior to the match if I recall correctly.
After I noticed and had some test discs shot at me (both while standing still and while I moved), I did a dash and let myself get hit again. This time I took damage.
Seems it thought I was always in dash/jump. The buff was active from the start until I refreshed it.