[QUESTION] Did anyone else encounter the bug where Trine 3 was at -67% discount, I added it into the cart (along with 1 other game) and when I got to the payment options it suddenly went to -50%...

The other game remained at -75%, it is just Trine 3 that switched up. To be fair, it is now showing -50% on the main page too but it was different like 15 minutes ago. Anyone saw this? Maybe a GoG error/bug?

I saw that, too. It was showing a 67% discount under Daily Deals, then when I logged into my account, it changed to 50%. Of course, GOG.com sometimes comes up in a different language until I log in, so who knows.