When players press shift button on edge of scaffolding, players fall quickly

Expect: players can go slowly down on scaffolding even edge by shift

Bug: When players press shift button on edge of scaffolding, players fall quickly

Reproduce 1A. Go center of scaffolding 

2A. Shift to go down

you can see players can go down regularly

1B. Go edge of scaffolding 

2B. Shift to go down

you can see players falls quickly and get fall damage