Ah sorry, I see now.
I think I would now back up my profile folder and then uninstall Opera, and find and delete any remaining folders and files relating to it, including all the shortcuts. Cleaning the registry of all Opera entries would be a good idea too (back it up first of course!)
Then reinstall Opera and see if the problem is still there with a clean new profile.
If it is, I can only assume it's a problem between Opera Beta and Windows 10, which I would have thought others would be experiencing too.
If it fixes it I would assume that something had got corrupted with the Windows 10 update, for reasons unknown.
You can then delete the new profile and replace it with your saved one, and hope that doesn't bring the problem back!
If it doesn't, all should be well.
some sites don't have any screenshot choices other than the tile, just grayed out ones
There seem to be a bug on Opera 42: http://www.opera.com/blogs/desktop/2016/12/opera-42-0-2393-94-stable-update/#comment-3061465036
After I update Opera beta, it opens with the larger text, hence not invoking my --alt-high-dpi-setting=96 command, although it's still there in the registry (this is not affecting my desktop icon). Is there another place I should be looking, or is it in the nature of how Opera installs?
But advanced options is not a setting for a specific number of columns per se but a max. I did get Konami code to work by ending in little b-a instead of caps, the latter showing in the Wikipedia entry.
12.17, Win 8.1. https://thepiratebay.vg/, is returning "Unable to complete secure transaction" with Opera 12.17, but loads with Opera 33.
The piratebay uses the Cloudflare's free SSL ceritificate that do not support Opera browser.