After switching to iOS 13 I cannot use the Add TaskPaper to OmniFocus action anymore…
When I add this action to a shortcut, it says “This action can only be run from inside the main Shortcuts app because it launches other apps.” and when I try to run it in the Pop Up appears "Could not run Add TaskPaper to OmniFocus, This action can only be run from inside the main Shortcuts app because it launches other apps.
How can I use this action in iOS 13? What does main Shortcuts app mean?
Which version of OmniFocus are you using?
3.3.6 Pro (2019-09-17) build.
It should be the current version 
Very odd. And you’re running the latest iOS?
The action works for me, but I am also running the latest beta of OmniFocus.
I’m running iOS 13.1.1
I’ve figured it out 

I disabled Safari a while ago and it seems like that this was the problem. Could it be that shortcuts on iOS 13 requires Safari to be enabled for Actions with Call-Back URLs?
That sounds very much like the problem.
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