Is This Server Action Condition Valid?

I have the following server action condition which looks valid enough to me, but it is giving a strange display in the Condition Properties box below.

Is there something wrong with my condition code, or with the Condition Properties box?

The expression is valid, seems like an UI issue. This should not affect the functionality.

($_POST.payment_method_name == "Card Payment") && ($_SESSION.s_admission_free == 0) && ($_SESSION.s_amount_total.toNumber() > 0)

Yes, that is what I am finding as I work with it.

Thanks for letting me know @Teodor!