This is strange because this wasn't working in the Beta, then it was fixed, and now its broken again when it went to production. I have Current Collection set for the Quick Guide, and when I open the Quick Guide on Android TV I just get a thumbnail for the current channel and no Quick Guide.
What is the version number shown in the app?
Its working for me, so I need more details on how to reproduce.
I discovered when looking for the version number that it had gone back to running the beta even though I had removed it from my favorites. I think the remote setup for Guide pulled it back in so I need to fix that. I uninstalled the Beta and I now have the 3.1.4 version running and Quick Guide is working perfectly with the chosen collection. Sorry for the confusion.