YouTube TV on Roku has had problems with Fox news since early October. I don't know why this problem is marked solved. Fox news works fine on YouTube TV with the app on exactly the same network as my Roku is on and Fox news replays consistently have issues on Roku where there are no issues on the mobile app.
Maybe instead of dismissing the problem you can actually look into it.
It is easily and consistently reproducible.
Different issue - the OP is about the FN and FBN apps - not the YT TV app.
YT TV has had issues with the playback of their recordings of FN evening content before midnight - on all platforms, not just Roku.
Again, this is an entirely different/separate issue from that claimed in the original post.
You should take the issue up with YTTV support if you are having problems streaming FN/FBN content through YTTV (They'll likely credit you at least half a month).