I installed Opera GX a few days ago and I'm loving it so far.
I don't know if this is the right place to report bugs and the like but in the hopes of helping the development team to make the best of this browser I wanted to report that at some point at random I noticed that the "easy setup" button wasn't working anymore, the only way I found to solve this was to close and reopen the browser and so far haven't had the same bug again.