ogg metadata title gets appended instead of being reset in a concatenated ogg stream playback

[Shreesh Adiga]

Summary of the bug:
When playing an online ogg stream like ​https://scenestream.io/opus in mpv, the title metadata seems to get appended instead of being reset. This was reported in mpv's issue tracker ​https://github.com/mpv-player/mpv/issues/9799

This behavior seems to have been introduced in this commit ​https://github.com/FFmpeg/FFmpeg/commit/0dc66553adb8b7dc89bc1118da0b0661a7ed1c09 which mentions concatenating performers, but this seems to be affecting Title as well in a concatenated ogg stream playback.

How to reproduce:

%  mpv https://scenestream.io/opus 
Not seekable, but enabling seeking on user request.
 (+) Audio --aid=1 'Slash [ru] - Mood's Satellite' (opus 2ch 48000Hz)
File tags:
 Title: Slash [ru] - Mood's Satellite
AO: [pulse] 48000Hz stereo 2ch float
A: 00:02:29 / 00:02:30 (99%) Cache: 1.0s/42KB
[ffmpeg/demuxer] ogg: Packet processing failed: Invalid data found when processing input
[lavf] error reading packet: Invalid data found when processing input.
A: 00:02:30 / 00:02:35 (97%) Cache: 4.4s/114KB
[lavf] Linearizing discontinuity: -0.080000 -> 167.120000
A: 00:02:35 / 00:02:41 (97%) Cache: 5.2s/186KB
File tags:
 Title: Slash [ru] - Mood's Satellite;Malmen, tHiborg - Fair Weather Friend (Forever)
A: 00:03:26 / 00:03:32 (97%) Cache: 5.6s/206KB

Exiting... (Quit)