Hi @Pekeapoomom,
Welcome to the Roku Community!
This behavior could happen if the channel requires a refresh or update. As you've mentioned, this is an isolated case with YouTube and YouTube TV channels. We recommend starting by checking for an update on the channels. Navigate to the channel tile, press the * sign button of your Roku remote, and then select Check updates.
For additional troubleshooting, you can visit our support page here: How to resolve a channel playback issue.
We hope that helps!
Thanks,
Rey
ERey.
Roku Community Moderator