Yes... I am having the same issue... seems like you have to have about 5 different browsers on your PC.. 1 for one thing.. one for another.. as it does not matter which you have... something on the web won't work on it.
Twitter Web Notifications work on IE11 Edge FireFox Chrome work just fine... on Opera.. nope... I can log on to twitter.. I can make tweet all day long.. but do I get notifications.. NO... I have to wait for the notification to come to my phone to know I got one. This sucks... Sadly opera is the only one of the above that works with Flash Player best.
So.. I use Opera for Flash player games... I use Edge to watch movies on netflix.. and each of the other browsers have their uses for better performance on other things... so basically.. Opera sucks just like all the others.
Be nice if someone could come up with a Browser that works with everything.