Stack up to #7148 contains a few places where it checks if a Function is an object method with matches!(parent, Ancestor::ObjectPropertyValue(_)). I think the code it's trying to match is:

obj = {
    async function foo() {}
};

But it will also match where the function is a property value, not a method:

obj = {
    foo: async function() {}
};

I think also need a check if object_prop.method to be able to tell the difference between the two.

Personally, I think it'd be ideal if AST didn't use ObjectProperty for both properties and methods, to avoid this confusing ambiguity. oxc-project/backlog#142