When a shulker/boat is on a block, and you have auto-jump activated, you will jump (but fail) on the block.
Linked issues
relates to 2
Attachments
Comments 6
Thank you for pointing this out, Tan Chin. I see why this happens, it is because autojump does not take entities into account. If it did this, than auto jump might be more laggy.
This issue relates to MC-103913 / MC-103236.