This is going to be a very random question, but what if you try converting a Release For Testing version into an app?
The reason I’m asking is that–though the whole thing is way above my pay grade–I wonder if the error has something to do with which action is action 0. In release versions, the GO action is action 0; in testing versions, it’s GLKLIST, whatever that may be.
So maybe if the testing versions behave differently, that tells you something? And maybe if they don’t that also tells you something.