Since late last week I have been in communication with the MS Support Engineer and others on my team and have some additional updates.
In our testing we initially thought that there was a caching issue with my browser. However, after clearing every history setting in my browser and in testing with newly downloaded browsers and with browsers on our servers we experienced that the problem still persisted, (and other users at my Company experience the same behavior). We also tried deleting those groups and recreating them, but that did not fix the issue either.
What we did find is that this problem is specifically related to the use the non-email-enabled Security Groups. The dynamic list just doesn't seem to consistently be able to pull in all items in that list.
We were however able to test and verify that if we created Email-Enabled Security Groups that we were able to assign them. I found that there were still times that the dynamic list did NOT show those groups if I tried to type in the Name of the group (Power BI – Refugee Services) but if I typed the email address associated with that group powerbi-refugessservices@b..... That the group would get pulled up in the list and I could apply it to the App permissions.
There was a couple of times that I also needed to go into a report dataset and apply individual permissions to a report dataset and the dynamic list there exhibited the same behavior.
In summary, there still appears to be a bug in the dynamic list, but for all intensive purposes I've requested that our ticket be closed out as we are able to continue moving forward with the workaround that we have discovered.
Just wanted to get this update attached to this thread for reference.
Thank you again to everyone who has assisted with this ticket.
David
