No audio after switching channels

Hi, I have a weird bug on one of our Apple TVs and Channels. On our main one (latest Apple TV), there appears to be an issue if we tune to one channel, we get audio, but when we switch channels, there is no more audio. We have to go back and tune back into the channel in order to get the audio to play.

I thought it might have been an issue with our soundbar, but switching the input to the TV speakers has the same issue. I've tried deleting the app and re-installing but that didn't help.

Oddly enough, our other Apple TV and Channels works fine without any issues upstairs. Any ideas?