A year ago, I thought the item was only for adjusting jump feel. Today I realised I missed a lot :
the camera switching when looking up and down,
the sloping terrain,
braking after button running, etc.
And the comments in the script are very good to understand, as a non-English speaker, thanks so much.
About the jump forward, it's strange because I tested right now and was able to jump at any time for any direction normally, with both keyboard or controller.
I need a few more details to understand what's happening.