I get a bug happening sometimes when i crouch jump. It's like stutterring/stucking when i crouchjump on a low wall (i dont know if that's clear). You can see it at 0'56 / 0'57s here : https://youtu.be/qCylXmobgpM?t=56
About that bug, i get stuck also sometimes when i cross a windows with the glass broken. It seems to be a similar bug.
Anyway, just one thing : Please, do not erase crouch jumping possibility, i love it !