Videos with multiple language audio tracks such as will not always use the original audio track when resolved in 1080 for AVPro. In that case, this video plays using an alternate Spanish audio track instead of the original English. The same video in a player using the Unity backend is not affected by this and plays in the original english.
This seems to have started with the recent changes to yt-dlp.
Including screenshots of the youtube audio track selector on this video. Not sure if the old behavior was always using whichever is considered "original", or if it was preferring english specifically, I haven't dug into yt-dlp to find out.