Right-click (context menu) Reload Tab on the tab
One really annoying feature of Opera is that you cannot, like in Firefox and other browsers, reload a tab by right-clicking on the tab itself (and choosing reload tab).
Yes you can press F5 or the toolbar reload button (but the first requires moving your hand off your mouse while the second is usually a "long" cursor move).
And yes there is a reload tab option on the page context menu (but depending on page content and where you click that may not be available).
Please add a reload on the tab right click menu like other browsers do!