operaoperandi, avi, see Chrome, Firefox and Opera for comparison (OS X Yosemite):

http://i.imgur.com/KnMvCjY.png

I think it is indeed an antipattern, even though window controls on OS X are generally on left side. I think we should rather follow Firefox / Chrome in this matter, not Safari that has even smaller market share than Opera. Moving from Chrome or Firefox to Opera is literally impossible on OS X because it is nearly impossible to get used to the weird UI, especially if you're using two browsers (FF + Opera or Chrome + Opera, what I do).

If you think the closing symbol on tab on the left side is alright - I'm fine with that, but I still think it hurts Opera a lot. Can I change it somehow? Maybe there's some plugin that will move the X symbol to the right side? It just makes no sense to have it on the left side, at all.

I have a huge UX/UI issue with Opera for OS X, apparently the icon used for tab closing is on the left side instead of the right side of the tabs in the tab bar. This is crazy because it's on the right side in every other browser, including Opera for Windows

When I want to change tabs I always click on the left side of the tab because clicking on the right side is supposed to close the tab. Unfortunately, on Mac I usually close tabs instead of changing them.

Can I somehow move the closing button to the right side of the tab? Why is it on the left side in the first place? It looks like a total UI anti-pattern.

operaoperandi, avi, see Chrome, Firefox and Opera for comparison (OS X Yosemite):

http://i.imgur.com/KnMvCjY.png

I think it is indeed an antipattern, even though window controls on OS X are generally on left side. I think we should rather follow Firefox / Chrome in this matter, not Safari that has even smaller market share than Opera. Moving from Chrome or Firefox to Opera is literally impossible on OS X because it is nearly impossible to get used to the weird UI, especially if you're using two browsers (FF + Opera or Chrome + Opera, what I do).

If you think the closing symbol on tab on the left side is alright - I'm fine with that, but I still think it hurts Opera a lot. Can I change it somehow? Maybe there's some plugin that will move the X symbol to the right side? It just makes no sense to have it on the left side, at all.

I have a huge UX/UI issue with Opera for OS X, apparently the icon used for tab closing is on the left side instead of the right side of the tabs in the tab bar. This is crazy because it's on the right side in every other browser, including Opera for Windows

When I want to change tabs I always click on the left side of the tab because clicking on the right side is supposed to close the tab. Unfortunately, on Mac I usually close tabs instead of changing them.

Can I somehow move the closing button to the right side of the tab? Why is it on the left side in the first place? It looks like a total UI anti-pattern.

Since the very beginning of moving to Blink (why, oh, why) I've been experiencing smaller or bigger problems with Flash on Opera - sometimes sites with Flash embedded videos were more laggy than in Chrome/Firefox, sometimes tabs were freezing, recently I've started playing some Flash games (Clicker Heroes among others) and it was working fine at first (for day or two) but now it freezes the tab every few hours, sometimes it freezes the Opera, and what's the worst - sometimes Opera freezes the whole OS (so I have to reboot or wait for a few minutes for it to unfreeze).

Also, YouTube - buffering sucks for Opera so many times, videos that load and buffer perfectly fine in Chrome or Firefox aren't buffering in Chrome, and sometimes refreshing doesn't help, at all.

I've been reinstalling OS, Opera, this happens on Windows 8.1, but also on latest OS X Yosemite, Chrome just performs 10x better when it comes down to Flash, damn, right now I'm writing this message in Chrome because I can't use Opera anymore as I have flash applications in tabs in background.

My old-beloved Opera, what they have done to you