I would like GX to support both Lightsync (from Logitech) and iCUE (Corsair).
Also, you could use these services in a mixed way, because I believe I'm not the only one who has, for example, an RGB keyboard of one brand, and an RGB mouse of another.

That's it, thanks.

I have this same problem.
I've tested in the standard Opera, and the problem only happens with dark theme.
This is clearly something the devs forgot about, just like trying to rebind any of those keys would crash Opera GX.
PS: the link for this page is "opera://extensions/shortcuts"

@abnerfrei About the Netflix one, it should show the video pop-up button, but there's a bug, present even on the Opera standard.
With Prime video, I guess it also could be affected by this bug (maybe is something related to Widevine DRM plugin)

@granddaddyopera The answer for the title is no.
Opera GX came from standard Opera, so it should have everything that the standard version has. With that said, they will remove things only for a reason

My guess is because of the design. They might bring it back in the future, hopefully, with an option to enable/disable it (I really prefer a single sidebar but having more options is always better).

Also, everything you could do to request this was already made with your post, because there's no dedicated "Opera GX Feature request" forum, so you must have faith that some dev will read this topic.

@vicarious I tested this here with "Start from the beginning with start page" and "Open a specific page or a page group", and in both ways, closing the window on the secondary screen didn't close the one on my main monitor.

Did you have the "GX Corner on the sidebar" enabled?

I recently changed the browser color to a custom yellow, and came across a problem with instant search where the color of the selected line is very light.
I wish there was a way to change the color of this element only, or for the browser itself to adjust automatically.

I tested several colors, and apparently any light color other than the default will present this problem.

With the standard color

With the "level up green"

With a custom yellow