Weird Al' Yankovic - Virus Alert is being added to playlist download when using cookies file

[vodaxx]

Checklist

• I'm reporting a broken site support issue
• I've verified that I'm running youtube-dl version 2020.05.08
• 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 bug reports including closed ones
• I've read bugs section in FAQ

Verbose log

youtube-dl --merge-output-format mkv --cookies=newcookiefile.txt -o '%(playlist)s/%(playlist_index)s - %(title)s.%(ext)s' https://www.youtube.com/playlist?list=PLlGDwy1TtSwblTfTd0Kti5Q6O5dTxYR4v --ignore-errors
[youtube:playlist] PLlGDwy1TtSwblTfTd0Kti5Q6O5dTxYR4v: Downloading webpage
[download] Downloading playlist: micro
[youtube:playlist] playlist micro: Downloading 6 videos
[download] Downloading video 1 of 6
[youtube] PY9xSykods4: Downloading webpage
[download] micro/1 - ★ What are microservices.mkv has already been downloaded and merged
[download] Downloading video 2 of 6
[youtube] RJkn9VHM7lc: Downloading webpage
[download] micro/2 - Monolithic vs Microservice Architecture Debate.mkv has already been downloaded and merged
[download] Downloading video 3 of 6
[youtube] 31YbPVOP35c: Downloading webpage
[youtube] 31YbPVOP35c: Downloading MPD manifest
[download] micro/3 - Microservices   disadvantages.mkv has already been downloaded and merged
[download] Downloading video 4 of 6
[youtube] 7kCSVECNYc4: Downloading webpage
[download] micro/4 - Microservices vs SOA.mkv has already been downloaded and merged
[download] Downloading video 5 of 6
[youtube] KznZcK7ksf4: Downloading webpage
[download] micro/5 - Hercules, Disney's Beautiful Hot Mess - a Video Essay.mkv has already been downloaded and merged
[download] Downloading video 6 of 6
[youtube] zvfD5rnkTws: Downloading webpage
[download] Destination: micro/6 - 'Weird Al' Yankovic - Virus Alert.f135.mp4
[download] 100% of 9.61MiB in 00:01
[download] Destination: micro/6 - 'Weird Al' Yankovic - Virus Alert.f251.webm
[download] 100% of 3.68MiB in 00:00
[ffmpeg] Merging formats into "micro/6 - 'Weird Al' Yankovic - Virus Alert.mkv"
Deleting original file micro/6 - 'Weird Al' Yankovic - Virus Alert.f135.mp4 (pass -k to keep)
Deleting original file micro/6 - 'Weird Al' Yankovic - Virus Alert.f251.webm (pass -k to keep)
[download] Finished downloading playlist: micro

Description

Weird Al' Yankovic - Virus Alert is being added to playlist downloads
It is being added as entry 101 if the playlist is over 100 entries or if under it is being added at the end.

youtube-dl --merge-output-format mkv --cookies=newcookiefile.txt -o '%(playlist)s/%(playlist_index)s - %(title)s.%(ext)s' https://www.youtube.com/playlist?list=PLlGDwy1TtSwblTfTd0Kti5Q6O5dTxYR4v --ignore-errors

It does not seem to add it if cookies is not used.

[vodaxx]

Is it just me?