Elytron/Jaspic: UserPrincipal is not propagated from web-container to ejb-container

We have implemented an oidc module on top of jaspic.

While the call of getUserPrincipal().getName(); delivers the expected user

The user principal is not propagated from the webcontainer to the ejb container.

Calling ctx.getCallerPrincipal().getName(); in a ejb delivers ,,anonymous''.

We have verified it with other application server (e.g. tomee with openejb) where it works fine.

I didn't find anything in the documentation that  you need additional configurations for the ejb container. I also can't find a reason why it should not be automatically propagated to the ejb-container,  therefore i think it is a bug.