Overriding Eq metamethod not invoking specified LuaFunction

[julcreutz]

Overriding the equality method of a lua table like this function:

private static readonly LuaFunction eq = new(nameof(eq), static (context, _) =>
{
    var a = CharactersByTable[context.GetArgument<LuaTable>(0)];
    var b = CharactersByTable[context.GetArgument<LuaTable>(1)];

    var result = a == b;

    return new ValueTask<int>(context.Return(result));
});

And assigning it to a lua table like so:

new LuaTable
{
    Metatable = Metatable ??= new LuaTable
    {
        [Metamethods.Eq] = eq
    }
};

does not actually invoke the LuaFunction when using the == operator inside Lua.

Is this a known issue that only the Index and Newindex operators are implemented?
Version 0.5.1