Sometimes - not always, but often enough to be annoying - when I ctrl-click to open a link in a new tab, Opera crashes. It's frustrating because I lose all my tabs and it remembers none of them; it just restarts on its own with a new window on Speed Dial.
I'm on a MacBook Pro (Retina, 15-inch, 2015) running Mac OS Sierra 10.12.3. I don't have a touchbar.