Some songs in playlist are skipped

[acc0un1]

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Describe the bug
Some songs in my playlist are skipped when downloading.

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code that was used that resulted in the bug

from pytubefix import Playlist, YouTube

# PLaylist 2 test
url = "https://music.youtube.com/playlist?list=PLRvkxIBOWuzv-mlE1zchTWO6IF1_1djlo&si=pCdrjVBYM9ri5O5l"

pl = Playlist(url)
count = 0
for x in pl:
    print(x, end = " ")
    print(YouTube(x).title)
    count = count + 1
print(f"{pl.length} in playlist, {count} counted")

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Expected behavior
This code should print the links to all the videos in the playlist (98). Instead, it only prints 85 links and skipps over the same 13 songs.
When copying all songs to another new playlist, only one of the missings songs appeared.
The missing songs do not have anything in common, I think.

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Screenshots
If applicable, add screenshots to help explain your problem.

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Desktop (please complete the following information):

• OS:Windows 2024-11
• Python Version 8.7rc3
• Pytubefix Version 3.12.6

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Additional context
I can download all the songs on their own.

[Benjamin-Loison]

For reference this question has also been raised as the Stack Overflow question 79239892.