Allay appears in /damage

The allay, which hasn't even been added in beta or experimental gameplay is in /damage for some reason.

How to reproduce:
Create a world (Or a server, since I only tested this bug on BDS)
Enter /damage @e[type=allay

Expected results:
There won't be anything

Actual results:
There was the allay

Notes:
If you do run the command it will fail as expected