Same issue here. Getting response in the Network tab with failed integrity, failed CORS policy. It is annoying because I use twitch regularly, and I did the stupid mistake of deleting my cookies of it when I saw some features stopped working.
This is really annoying to be honest because it happens regularly. Why is Twitch so sensible about it I wonder
LE: This happens on the regular Opera browser. Seems that I have the same issue with Opera GX, great.