@lcerica Came here to post that as well!

Confirmed, fix for this Gmail issue is Version LVL 2 (core: 73.0.3856.434)

@ryxslow I think most of us know about other adblockers, the real fix would be Opera updating the browser. Using another adblock on a browser which has "built-in adblocker" as one of its main selling points is less a fix and more a workaround sadly

Exact same problem as the 2 above me. When signed into Youtube, ads pop up. When logged out, no ads.
Using Opera GX latest, no update available for the browser, and no update available for the Adblock Lists.

@lcerica Came here to post that as well!

Confirmed, fix for this Gmail issue is Version LVL 2 (core: 73.0.3856.434)

Shortcuts for Force Dark Page still not working as of April 2021. Shame 'cus it would be really useful, some pages are way too bright yet white text on black screen hurts my eyes, so I'm always switching between Normal and Dark Mode on most pages. Hoping for a fix soon

@awfool Same here. The site https://downdetector.com/status/gmail/ is full of complaints about this Opera GX issue as well. I've tried turning the VPN on and off as a bonus, and updated the browser, but no luck.

See screenshots attached for perfect definition:

Image on the left is Opera GX, latest update as of Feb/2021. Image on the right is Google Chrome, also recently updated. Bonus image is from Internet Explorer, just to make sure that this is an Opera problem.
For some reason on Opera GX, the default Google Search result font is no longer the same - I even installed WhatFont, but the app does not work on the Results page unfortunately. I don't know what font it is, or if it's the same one with larger pixels, but Opera definitely changed something.
The fonts settings didn't help - I changed them all and nothing worked. Thanks for any reply!