Can sprint while crouching with Swift Sneak enchantment

You are able to sprint while crouching with the Swift Sneak Enchantment

Steps to Reproduce

1. Enchant a leggings with swift sneak (any level)
2. Crouch
3. Sprint

Expected
You go at the swift sneak speed

Observed
You go faster than the swift sneak speed, possibly faster than normal walking speed with level 2/3