Some id3 tags repeated

Describe your issue

Running gst-discoverer-1.0 -v my_file.mp3 results in the artist, album, and genre tags showing repetition.

Other applications, such as ffprobe, do not have the same issue.

artist: William Elliott Whitmore & Jenny Hoyston, Jenny Hoyston and William Whitmore, Jenny Hoyston and William Whitmore, Jenny Hoyston and William Whitmore, Jenny Hoyston and William Whitmore
album: Hallways Of Always, Hallways Of Allways, Hallways Of Allways, Hallways Of Allways, Hallways Of Allways
genre: Country, Folk, Folk, Folk, Folk

Expected Behavior

Tags are "normal" like in other ID3 readers.

Observed Behavior

Certain tag values are repeated multiple times.

Setup

• Operating System: NixOS
• Device: Computer
• GStreamer Version: 1.18.5
• Command line: gst-discoverer-1.0 -v my_file.mp3

Steps to reproduce the bug

1. open terminal
2. type gst-discoverer-1.0 -v my_file.mp3

How reproducible is the bug?

100%

Solutions you have tried

I'm able to fix the file by running mp3val -f my_file.mp3 on it.

Additional Information

I can't provide the files directly due to copyright, but if you're interested I can probably extract the tags if you're able to guide me a bit. It's easy enough for me to fix the files now that I know a workaround, but for users of applications like Lollypop that use GStreamer and don't offer tag editing, it's hard to fix. I tried a number of other tag editors and none of them repro'd this issue.