YouTube app on iPadOS 14: image disappears when audio sent to AirPlay speaker

It turns out that there's a sort of workaround to this issue by tweaking a setting that somewhat works differently (and probably wrongly) with respect to iOS 13.x.

Settings -> General -> Airplay & Handoff -> Send to TVs with Airplay (or the likes): the setting was "Automatic". If I set it to "Never" the image is back on YouTube app, while erratically still disappears when airplaying the audio.

In iOS 13 (on my iPhone I didn't update to iOS 14) no matter what the setting is I have no problem when airplaying the YouTube app audio. In iPadOS 14, if the setting is "Ask" or "Automatic" then the image disappears. The idea is that the image should appear on an airplay TV within the network range, but even if I have an Apple TV, the image doesn't show up there, so it is lost.

For this reason, I positively think that this is a bug on YouTube app, or at least an incompatibility between the app and the new iOS 14, and therefore it should be corrected. But at least there's a workaround, and I can have the video on the iPad and the audio on the airplay speaker.

It's still very erratic behavior and unreliable even with this solution. I've probably found an even easier method to workaround it without tweaking the settings.

I've found that, while the audio is airplayed and the image is black, if I swipe up YouTube app and go back to home screen and then I go back to the app, back is the image! This works consistently for me, no matter what the airplay setting is.