The old ones (its logic) were very nice (outlined icon means unpinned and filled means pinned). Maybe the fill color can be changed to black (or according to the theme)

• there's still no option to quickly ungroup islands (nonsense)
• there's still the both 'pill' + name
• 'new tab in island' should be on the tooltip (can replace the small + circle appearing which need to be caught by user)
• no popup appearing on first island creation
• islands still can't be pinned
• still no highlighting in island's dropdown
• still no color indication for tabs in the dropdown pointing the reference to the island.

suggestions with pictures here
https://forums.opera.com/post/395109
https://forums.opera.com/post/395122

Also, in additon to the previously reported random blue borders for the minimize and EasySetup buttons

Now there's a border (circle) for the extension icon

Btw, the icons are buggy.

• After pinning/unpinning the icon can change to black randomly.
  

*After opening the 3 dots menu and then clicking outside on the icon's area, the icon disappears and then appears after moving cursor.

The 'redesign' should be inside the EarlyBird or don't remove the flag at least, the feature is not ready at all to be enabled by default.

The old one is better. the icons a bit too big in One version comparing to text and extensions icons, in pre One version the size is optimal.

RNA-2865 Extension popup is cut when AI feature is disabled

It can be said that it's still cut (the right border and its shadow are not visible)

for example...

1. It's still not possible to drop a tab after the [+] button, new window is created instead.

2. Still not possible easily insert a tab between existing tab.
   On the particular screenshot under the tab which is being dragged there's fully hid another tabstrip's tab
   

3. So is need to move draggable tab left and right to put is correctly. But in this case there'll tabs overlay and thus tab island creation is coming depending on how fast and precise user must be.
   But there's no option to disable the tab islands creation by draggingtabs.
   *Btw, Edge has such option
   

4. after such manipulation often a new tab is created not as the last one but somewhere between existing tabs.
   

Th new UI is more complicated to use in overall.

Now the search popup looks like icons only (none of the buttons is preactivated) and on hover it flickers while oversized button appear.

At the same time, I can move cursor over the searh popup and nothing happens (most probably because of the huge buttons padding)

Suggestions were described here https://forums.opera.com/post/401600

*I don't even mention again the partially broken 'scroll to top' feature. It's phenomenal but it's still scrolling to top while moving tab (~3 years bug). Also the PiP still looks bad with its full dimming on hover, without timing and with its reverse volume adjustment from top to bottom.