Adorn causing vanilla clients to float

[CodionCA]

Versions of Minecraft, Fabric and Adorn

• Adorn: 2.1.3+1.17.1
• Minecraft: 1.17.1
• Fabric Loader: 1.11.6
• Fabric API: fabric-api-0.37.0+1.17

Describe the bug

When using adorn vanilla clients joining the server are able to float and control their movement with shift.

To Reproduce

Steps to reproduce the behavior:

1. Start fabric server with adorn, kotlin and fabric api
2. Join fabric server with pure vanilla client
3. Hold spacebar to float

Expected behavior

Not have players float.

Additional context (Optional)

Obviously this is not a big deal since vanilla clients shouldn't be joining a modded server but for whatever reason even my constant telling them to install the modpack they try and join with a vanilla client.

ee20210727_125258.mp4