A new security feature in Mojave revolves around a system dialogue that prompts you to grant access to apps that want to control other apps, such as Finder (I'm finding frequently happening with some apps like Epichrome):
Is there a known way to disable this or to allow certain destination (controlled apps) to always allow such activity?
I do believe that this behavior has changed markedly from the previous OS releases with regards to just using the "Accessibility" tab to simply allow an application to make system changes.
Here is the new panel: