Hi, today another update. Since then the Opera is working great. Fast, simple, smooth, looks stable.
I love the browser.
It can hold the pages in the memory so when you come back after some time it doesn't need to reload the pages as IE. Unfortunately the page is reloaded on the top, it doesn't reload you to the point where you stopped before (in long forums you have to scroll down and find the point where you stopped).
No other bug found so far.
Thank you guys for your hard work.
Nokia Lumia 630DS, WP8.1