SAML Authentication with SmartCard

Hi there

I want do test SOAP Webservices with SAML Authentication and therefore access the SmartCard. According to the post

https://community.smartbear.com/t5/SoapUI-Open-Source-Questions/Using-Windows-MY-Keystore-for-authentication-with-smartcard/m-p/225566

there seem to be issues unanswered when acessing the windows keystore. 

Is there an official answer meanwhile, a bugfix or workaround?

Regards

Daniel