"close other tabs" made me lose countless tabs when all I needed was to “close tabs to the right”. I really need to “close tabs to the right” after a big research comes to an end - I started with new tab (the rightest) and I kept opening new tabs, until I found an answer. They were all opened to the right, so I need exactly that - “close tabs to the right”. But instead - all gone. No undo. No clear list of all that I lost. Only about 15 ctrl+shift+T’s. And most of the restored ones are the recent ones I meant to close anyway. A waste, a frustration. Please allow me to remove this button.

Manually unmuting all the tabs after an accidental press of "mute other tabs" is also frustrating. I never need mute (pause maybe, but never mute), please allow me to remove this completely. Or at least an undo of recent action or a heads up would be nice - like “are you sure you want to close/mute them all?”

If you'd like an explanation why I need so many tabs, here it is: https://forums.opera.com/topic/70127/add-more-settings-for-tab-appearance-and-menu-actions

The tabs extended to the top of the screen, making it easier to select and switch between them.

In the new one they sort of "float" and it's very easy to overshoot your mouse.

It may seem trivial but it makes a real difference for some people. I find it easier to switch between them using ctrl+tab which isn't ideal, the old UI did a better job in that regard.

Otherwise the design looks smooth, just a bit difficult to work with at the moment

I am a great fan of the "Search for open tabs" feature and its convenient "CTRL + SPACE" shortcut. This option would IMHO be even greater if it displayed on each line a "Close" button (beside the icon on the right to switch to this tab), or alternatively a selection box with a "Close" button at the bottom of the dialog, which would close all the selected tabs (those boxes would be selected by default). I think this would be much more useful than for instance the "Close tabs to the right" option found on clicking on a tab’s header.