You can Get Damaged While 1.5 sneaking

How To Recreate

Make Sure The 1.5 Sneaking Toggle Is Enabled !!!

1: Place a slab it the ground

2: then 2 blocks above the slab place block

3: then walk there

Or

1: Place A Block Two Blocks High

2: Sneak

3: Go Under The block

4: jump

for a Breaf second You will get The Air Bubbles