@flaviu2
I've been having the same problem too. From what I've seen, if you click between the tabs with your cursor above the tab (the cursor is at the very top of the window), this issue/bug doesn't occur at all. Also, when clicking normally between the last tab and any other tabs in the island, the issue only occurs if there are 7 or more tabs in the island (when no other tabs or islands are in the workspace). When there are 7 tabs in the island and 1 outside, the issue only occurs once. So if there are 6 tabs in the island, and 2 tabs outside the island, the issue does not occur.
Hopefully some of this is helpful 