Every time I open Youtube on OperaGX it works for around 4 seconds an then this (first image, look at the left corner) happens. It's as if I can see the code beneath the screen, and I can't click on anything on the home page, but I can select the code (as can be seen, under the "The Office" video, my cursor is in over-type mode).
I managed to hit Ctrl+A and Ctrl+C, and in the second image you can see one part of the code
(I can open and use Youtube just fine on Edge)
If someone could tell me what's happening, I would be really grateful!