The scrolling issue in the opera 12 has been solved it seems earlier when I unchecked the smooth scrolling option in the browser it did not work at all, don’t know what can be the issue. But now after reporting the issue to the developers finally it has been solved and now checking the smooth scrolling option on the browser gives quite smooth scrolling and now it has been fixed that’s what I can say here. So thanks opera people for paying heed to this bug.
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