Hey,
long time Opera user here, last time I tried for a new browser I found out that mouse gestures were quite inferior to what they were in the past in Opera 12 so I degraded back to it. Now that I have found out that support for O12 mostly has faded and fewer and fewer websites seem to work with it correctly, I decided to upgrade to what seems to be O39. Main selling point for me during later Operas were the smoothness of mouse gestures for example for tab switching with RMB and scroll, how do I activate them in O39? Also I have used this browser for decades with tab bar hidden and I find the whole bar quite irritating to be honest, how do I hide it?