Auto-jump make players flicker when in water, lava, cobweb, powder snow, or sweet berry bush when pressing the forwards(w) button

Auto-jump make players flicker when in the water, lava, cobweb, powder snow, or sweet berry bush by press the forwards(w) button.
Auto-jump does not work correctly in the water, lava, cobweb, powder snow, or sweet berry bush.
It should be like Bedrock Edition the same.

Video:
https://www.youtube.com/watch?v=E7GJK-csHlk