Issue seems to have reoccurred as of 1.20.3 but only when the player is in a boat.
It doesn't effect other mobs in boats
happens when moving or at a standstill as long as player is in it.
Did not see any problems with launching myself on slimeblocks only when in a boat.
There was another post on this specifically but it was linked to this one as a duplicate so I'm commenting here.
Hope this is clear let me know if more info would be helpful
Issue seems to have reoccurred as of 1.20.3 but only when the player is in a boat.
It doesn't effect other mobs in boats
happens when moving or at a standstill as long as player is in it.
Did not see any problems with launching myself on slimeblocks only when in a boat.
There was another post on this specifically but it was linked to this one as a duplicate so I'm commenting here.
Hope this is clear let me know if more info would be helpful