The bug
Tamed dogs can't sit on slime blocks. The dogs repeatedly sit and stand up.
Linked issues
is duplicated by 3
relates to 3
Attachments
Comments 17
I beleive this is do to how the slime block works, basing your height off the ground to determine how high to make you bouce (per a formula). It most likely doesn't have an and/or function in it saying that if your at 0 blocks high (standing on it) then ignore the formula. Because it doesn't the entity always thinks its in a state of movement.
Probably caused by MC-44352
When a sitting animal is in the air it stops sitting until it is on the ground again
Confirmed.