What I did: I installed Agenda and opened it for the first time. I was listening to a podcast (Using the app Overcast) at the time and the podcast stopped because of the Agenda intro video. After the video finished and I could see the expected Agenda note-taking interface.
What happened: I switched back to Overcast to start listening again and came back to Agenda. The audio from the podcast stopped again.
What I expected: I expected given the video was over and I was taking notes that the audio from Overcast would keep playing.
Things that might be helpful to know (Agenda version, OS and model, etc):
iPhone X running iOS 11.3.