Missing Videos in YouTube Playlists

[benjaminmesser]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2020.03.24
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar issues including closed ones

Verbose log

Log not applicable in this case.

Description

When trying to download certain playlists such as downloading an entire YouTube channel's videos, sometimes there are issues where videos will not be present in these playlists, even if they are present on the channel itself. For example, when you try to download all the video's from this channel page then you will be redirected into downloading this playlist of all of their uploads. Only, this video is missing from this playlist even though it appears on the channel, and this video appears twice at position 299 and 301 in the playlist.

Is this issue a YouTube bug or a bug with youtube-dl? Or is this some sort of user-generated error? Is there anything that can be done to remedy this if any of these are the case?

[benjaminmesser]

In fact, upon further investigation, I've found that the missing video reappears once again after a video in the playlist is selected, and the duplicate video is removed, but the playlist overview still shows these abnormalities. This is very annoying because youtube-dl uses the playlist overview to download playlists. Is there some way to work around this or is this just broken until YouTube fixes it?