In Apigee Verify JWT with multiple Algorithms

[bhatnagarm]

I have currently setup different algorithms for my Auth Code Flow token and my Client Credentials token. The Setup I did to verify this in Apigee is 

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<VerifyJWT async="false" continueOnError="false" enabled="true" name="Verify_JWT">
    <DisplayName>Verify_JWT</DisplayName>
    <FaultRules/>
    <Properties/>
    <Algorithm>RS512,PS256</Algorithm>
    <IgnoreUnresolvedVariables>false</IgnoreUnresolvedVariables>
    <Issuer>https://auth.example.com</Issuer>
    <PublicKey>
        <JWKS uri="https://auth.example.com/pf/JWKS"/>
    </PublicKey>
    <Source>inbound.jwt</Source>
</VerifyJWT>

It is sometimes working well for a client credential flow (using RS512) but sometimes it fails with invalid token. According to my understanding of the documentation a token should be validated against both these algorithms. Is that an incorrect assumption? What is the best way to make it validate against both ?