Okay, that sucks so much! Sorry to hear you're dealing with it too! I have no idea why they won't work and it's only a few of the most recent ones. 😞

I'm assuming it's just a Twitch issue since they recently implemented the portrait versions, hopefully they fix it but who knows when that'll be... 🙃 Does the issue still happen if you don't edit the portrait versions? I haven't tried that yet...