Even found this 3rd party SDK that can open the parent app from the shield: https://www.wellspent.so/

Got a response from technical support regarding my ticket. They confirmed that this functionality is not supported, and they were unable to clarify whether other apps (e.g. Jomo, Applocker) are using public methods or not. I think they are just referring to documentation though. Will keep digging.

I submitted a ticket to Developer Support regarding this issue. Since several third-party apps already support this, I’m hopeful we’ll receive guidance on how to implement it.