RFC-14 App Access Rule

Hi @JuliaDaehne ,
I have a question about the app access rules and guest users. If I understand correctly, app access rules can prevent an app from accessing some objects. The same can happen if the app is used by a guest user.
How can we differentiate between blocked by access rules vs blocked by guest user access? Depending on the implementation, this could lead to unexpected results. For example see Introducing single-space guests beta in Confluence Cloud! - #2 by marc