@sgunhouse, Not for me:

Anyway, having different UX with same browser on 2 different OS is not a good thing.

I'm using Opera on MacOS and Linux (Ubuntu), and it drives me crazy that "Close tab" buttons are on the left side on Mac, and on the right on Linux.
On both OS window maintenance buttons (Close, Minimize, Restore) generally are at the left side of the window, but for some reasons "Close tab" for Opera Linux was made on the right side.
As there is a big field of discussion where it should be due to vast Linux distributives, maybe it is possible to add an option under opera://flags to manage this (at least keeping current state by default)?

I want to have same UX on all platforms, please.

Thanks,
Pavel aka LibertyPaul