I've been facing the same issue on my WordPress site. It has kadence theme and couldn't load the customization as well in Opera. Can anyone crack the case?

@newworldman I've always tested Vivaldi, but there always were some unexpected quirks. In my experience it doesn't run fine with WhatsApp in the panel, which works much more smooth in Opera.
Also, it happens to do not foreseen things in Instagram. Recently, I was logged out of my account, as I wanted to open my Threads account.
Otherwise a great browser, but it tends to make things to complicated in my opinion. And it's not willing to implement something like Aria, as they take a stand against AI.
For me it's Opera 1, Chrome 2, Safari 3 (on my Mac, but 2 on iPhone).

@kyu3 same problem here in using Chinese.
Please give it a fix.

Opera One(Version： 111.0.5151.0) (arm64)
Distribution Channel：developer
System：macOS ver. 14.4.1（build 23E224） 14.4.1 arm64
Chromium version：125.0.6382.3

I know this probably doesn't mean much, but +1. I've been using Opera GX for the past four years, approximately, but something that has always really annoyed me is the lack of tab management that all other major browsers have. I know workspaces exist, but they function completely differently and, in my opinion, much worse. Tab islands being in regular Opera but not in Opera GX is infuriating, and if any developers browse the forums, let it be known that GX's users are frustrated.