This isn't a bug or something.
Twitch Soundtrack provides songs for live streams, but it doesn't let us know if that song playing right now can make copyright claims. Also, some of Soundtracks in Twitch Soundtrack is already claimed for using in Stream Videos or Clips, so I can tell you that using Twitch Soundtrack is not perfectly secure from copyright strike, and it is recommended to remove or not save Stream Videos and Clips of that moment.
This isn't a bug or something.
Twitch Soundtrack provides songs for live streams, but it doesn't let us know if that song playing right now can make copyright claims. Also, some of Soundtracks in Twitch Soundtrack is already claimed for using in Stream Videos or Clips, so I can tell you that using Twitch Soundtrack is not perfectly secure from copyright strike, and it is recommended to remove or not save Stream Videos and Clips of that moment.