APM JWT Multiple Providers NOT WORKING

Dear F5 community,

Using F5 APM 16.1.3 (as an oauth resource server) I am trying to implement a per-request policy that will verify the signature of JWT tokens sent by the client. These JWT tokens can be issued from two differents issuer (Azure AD or STS). 

I am able to verify JWT tokens for each provider seperatly using a dedicated "JWT provider" with only one Provider attached. 

When using 2 providers as follow

I got following error message:

WWW-Authenticate: Bearer error="invalid_token",error_description="Issuer Mismatch : Claim issuer= https://sts.windows.net/ Provider issuer=https://login.microsoftonline.com/v2.0"

Based on F5 doc below, the built-in object supports having multiple JWT providers
https://clouddocs.f5.com/cli/tmsh-reference/v15/modules/apm/apm_oauth_jwt-provider-list.html 

Configuration is pretty simple:
- 1 Access Policy with "Allow" all ending
- 1 Per-Request Policy with "OAuth Scope" set to "Internal"  with the "jwt-allowed-providers-list"

I guess It is most likely a bug.

Anyone was able to make it work with multiple JWT providers ?

I can workaround this by parsing the JWT payload, then determining the issuer and based on the issuer make two branches in the VPE:
- first branch with the "oauth scope A" that will validate the token using JWT-Provider-A
- second branch with the "oauth scope B" that will validate the token using JWT-Provider-B

Thanks