I have just switched to Opera One and I find closing tabs very, very frustrating. When you move your cursor over the 'X' to close a tab it immediately opens a little window that shows the tabs in the Island. It is virtually impossible to close a tab using the 'X'. So instead you have to use a right-click which is very cumbersome. This is design flaw will probably drive me away from Opera.
I'm running Ventura on a MacBook Pro, Opera One 100.0.4815.76
Jim