Same Problem, but it is a little different. When I open Opera, the settings with Default Apps open. There when I try to make Opera as my Default Browser, i click on Opera from the list of softwares but, it actually doesn't make it my default browser. When Opera is my default browser, it should show Opera icon below the Default Browser option but it actually doesn't. So I can't even make Opera as my default browser. So whenever I open Opera, the settings open with it.
Also I cannot use the trick of making chrome or any other browser as default. So what should I do????
Also i am not going to download Chrome any more, there are a lot of problems it caused to my new laptop which i bought 2 weeks ago, and some of them still continue. I find Opera much better than chrome and also want to make it my default software.