I've noticed lately that if I'm on the "Library/Recently Recorded" screen when I get out of the Channels app, and then go back into the Channels app some time later, any new recordings that happened while I was out of the app do not appear. I have to back out of the Library tab and go back into it to get it to refresh and show the new recording(s).
I don't recall this being an issue before. Did something change in a recent update to the app?