'preventsjumping' component does nothing

When using the preventsjumping component in a custom block, it does nothing for players whether it is set to true or false.

Update:

• This component now makes players jump as if they're on a honey block, which will prevent them from jumping up blocks but they'll sitll 'jump', so I'd argue this bug is still valid.

Expected Behavior:

• When set to true, players won't be able to jump at all when standing on the block

Actual Behavior:

• Players can jump on the block no matter what

Steps to Reproduce:

1. Download the attached pack
2. Load a new world and use the give command to obtain 'grunt:mud'
3. Attempt to jump on it
4. You'll jump as if you were on a honey block