Stamina is decreasing when hitting nothing but when cut trees the stamina increasing

Actual result: When MC hit friend or just nothing, user noticed that the stamina will decreased drastically, meanwhile when MC cut tree the stamina will increased. Also there's nothing between stamina 0 and 100 judging by the movement.

Expected result: The stamina should be consistent, whether it'll only decreased when doing some work or any movement will decrease stamina.

Attachment: stamina is decreasing.mp4