Area Effect Cloud passed with Predicate "is_baby"

Area Effect Cloud passed with Predicate "is_baby".
I looked it up, but I couldn't get any information, so I reported it.

Postscript: Not only Area Effect Cloud, but also entities such as Item Frames, arrow, and ender dragons have been passed.
Sorry for the late report.

What I expected to happen was...:
Predicate test fails.

What actually happened was...:
Predicate test passed.

Steps to Reproduce:
1. Create a predicate.

baby.json

{
    "condition": "minecraft:entity_properties",
    "entity": "this",
    "predicate": {
        "flags": {
            "is_baby": true
        }
    }
}

2. Throw the Lingering Potion.
Or, /summon the Area Effect Cloud.

3. Then run the command.
/execute as @e[type=minecraft:area_effect_cloud] if predicate namespace:baby

Area Effect Cloud passed Predicate baby.json.
It may be the intended behavior.