okay, I'll be careful, it is a pity that this can not be undone, sometimes it is very angry

I now tried to erase the text but instead moved to the previous page, I will write this message every time once you face this problem.

good day, I checked in Opera, to say two things, Opera is the best browser, and second, that he was perfect you need to disable return to previous page press "backspace" every time I curse those who invented the return to previous button when you press this button!!! I looked through the settings and there is no option to disable it, I strongly urge you to reconsider the policy of hotkeys!!!!