Marc G

Got a lot worse in the official 1.14 release.

I have the same problem. It happens a lot more often on vertical bounce for me. And I do think it is a bug. Yes your position is different most of the time you use a slim block launcher, but that doesn't change the fact that a slime block should bounce you up if you stand on it. As long you are in range of the pre dot integer values of the slime block it should push you with slime block physics. And that worked fairly well in previous versions.