Duplicated videos in a playlist don't load after the 1st one.

[sqtvrnqliq]

Checklist

• I am using the latest version - 0.20.6
• I checked, but didn't find any duplicates (open OR closed) of this issue in the repo.
• I have read the contribution guidelines given at https://github.com/TeamNewPipe/NewPipe/blob/HEAD/.github/CONTRIBUTING.md.
• This issue contains only one bug. I will open one issue for every bug report I want to file.

Steps to reproduce the bug

1. Go to any playlist with a duplicated video that plays after the original.
2. Press on the background play option or play all.
3. Wait until the original video is done or fast forward; then comes the infinite buffering.

Actual behaviour

After the og video, the duplicate will be stuck buffering in timelessness.

Expected behavior

The duplicate video loads as normal without an issue.

Screenshots/Screen recordings

Logs

Because of this issue, I had to switch to the pre-unified 0.19.8 version which loaded the playlist as normal but buffered a little after some time and then went back to playing the expected video. I have no idea at all what's causing this issue in the newer builds but it's most probably youtube's doing. I do hope you at least try to fix this because there's no other ad free app I can listen to my long playlists on.

Thank you.

Device info

• Android version/Custom ROM version: 9
• Device model: Samsung J5 (2017 Build)

[RickyM7]

Duplicate of #4940.