Might not work for you but, Press the overview button, square one, press and hold on opera logo and and it should show the information icon on the right side and thats a shortcut to app info.

Did you give it storage permission in app settings?, It doesnt ask it you must grant it

Sorry, not at this time.

They updated the software and did alot of improvements but there is still no password management.

With tablet ui there is 3 over flow buttons, the data saving is in settings.requires 3 taps to that option.

I cant paste to address bar if phone is in landscape, it just vibrates. Been a bug for a while now.
Latest build 37. On android 7.1

That site is fine for me,
It depends on your phones hardware.

This thread is about auto scrolling to bottom,top left or right only solution is to close the tab.
I haven't experienced this with any other browser, Still occurs with android 7.1, but it was fixed with a custom rom.

Are you signed into opera sync?, It may show on your opera desktop browser.

There is no password manager with opera,
You save the password when it prompts on certain sites,thats it.

I get this issue too, it happens when i accidentally keep one finger on the screen and its acts like im selecting text, but the page will slowly scroll down, sometimes to the sides aswell, and the only way to close tab is to press back, the other option is gone when you hold the back button to exit

Its been going on for since the start of the year i believe, but i havent had this issue since i upgraded to 7.1