read-only properties don't update on standard PropertiesChanged

Let's have a property with writable = false:

        struct ReadOnly
        {
            inline static std::string name()
            {
                return "ReadOnly";
            };
            typedef Service Interface;
            typedef std::uint32_t ValueType;
            static const bool readable = true;
            static const bool writable = false;
        };

When a service updates such property with the standard org.freedesktop.DBus.Properties.PropertiesChanged signal the property value on the client side just simply does not update and there is no error or anything printed.