I still think that tab island also can contain only 1 tab after closing second last tab.
Right after an island was created the popup should appear.
2025-11-04_221504.png
But later on hover there's no need to see the name twice each time.
2025-11-04_222342.png
The same is with the color palette.
Instead we could have 'Edit' option (text or icon) on hover inside tooltip. Also, the + button for creating 'new tab in island' can be transfered from the tabstrip onto the tooltip.
And the tabs belonging to the island can be marked somehow (colorful vertical lines for instance or border).
2025-11-04_222720.png
*right click context menu should include 'pin/unpin' island option.
**Btw, I don't see currently option to ungroup island?? How can I close island and see the tabs separately as before?