Interesting, that must be new as of 1.2.2 plugin version. When I'm using 1.2.1 it doesn't matter what template is used as default. If I use plugin 1.2.2 and set JA Flix as default, it will work BUT it will disable the Listing Fields for JA FindUs so that is not a solution for me.
The only thing I can do, as it seems, is to keep JA FindUs as default and simply stay on plugin version 1.2.1. I'll try and create some articles, gallery, and video for JA Flix although it is not set to default. Let me double-check before we close this ticket!?!