@atomicthumbs I'm also a researcher, also very much enjoy opera, but this feature you've mentioned sounds great and I would very much like to have that older version of the tab cycler. ((Also a restore previous tab/s button would be nice instead of having to use the keyboard input))
In Opera Touch they have something like this called My Flow. If you look you'll see there is already a thread requesting to bring My Flow to Opera for Android - look over the description, and if it does what you want then support that thread instead.
@samis10 It really is a good ideas friend, since the option to make Clik right and go to the option to move tab to the board takes longer than the suggestion you provided. I did a test with your suggestion, and I think it's more like dragging the lashes to a workgroup. I hope you'll be incorporated soon.
@phoenlix I believe workspace feature and my flow are both still can be develop to something more. maybe they opera developers make them work together or something. I don't know. but for now both features are really cool but they are very unfinished in terms of functionality. I would also like to see some auto-tab-hibernation feature...
@tito666 What doesn't make sense is someone who needs to open 100 tabs all the time even if just 10% will be used. In fact, I think that someone who always need to have hundreds of tabs opened simply has a problem with the closing of tabs.
Those people don't need a browser feature but just learn how to close tabs.
An regarding the other issue, it shouldn't be a problem in 2020.
When you're on the site, hit ctrl + shift + i to load the developer tools. In the developer tools, click the kebab menu (3 vertical dots) near the top-right of the developer tools. In the Menu, goto "more tools" and then "Network conditions". The network condition settings will appear at the bottom. For the network condition settings, check "disable cache". Then, uncheck "select automatically" for the user agent. Then, in the user-agent drop-down, set Chrome for Windows. Then, hit ctrl + r to reload the webpage.
If things load correctly when you do that, it means the site is serving Opera broken code/HTML.