Currently using Developer Edition 1.21. When setting content/map used in ExB to 'Organization', I get an invalid redirect uri error when opening the application. The prompt appears to sign in to the AGOL organization as expected and the I'm not able to sign in.
I've actually never tried to restrict an ExB app deployed from AGOL before - I always set them to public - so I don't know when this issue occurred or if it's always been this way. I also do most of my ExB work in Portal, where I do not have this issue.
Troubleshooting steps:
I've made sure that the redirect uris are the same in my Portal and AGOL exB content item
I've made sure the provided URL is the same
ClientID is appropriately applied in the code for each deployed application
Tried accessing the application from a device other than the one I built it on (and off-organization network), get the same error.
I feel like there must be something easy I'm missing here, but I don't know what it would be. Thanks!