I had the same issue with retaining saved bookmarks and when I went to uninstall Avast an option came up to repair product, which I thought I would try first. Following this I can now save bookmarks in Opera, hopefully this continues.
@krazi-e Sounds like Youtube is trying to block right-clicks. Try an alternative, like Ctrl-click or middle-click (both of which normally open links in a background tab). Note that some scripts to block right-click also block middle-click, so Ctrl-click may be best.
@luizfarah Password manager is that page in Settings when you click on "Passwords". Or type
opera://password-manager/passwords
in the address bar and press Enter.
When in the password manager, click on Settings in the left column to see the import and export options.
Apparently they redesigned that section recently, as it used to have the 3 dots you mention, but I rarely need to access that page and hadn't noticed the change.
The "Install Chrome Extensions" extension hasn't been needed for a long time and you should not have it installed. Opera has built-in support for the Chrome web store. However, with Opera's built-in support, you should not see any Chrome extension enabler/emulator extension at the URL opera://extensions, even in developer and even if you start Opera with the --show-component-extension-options switch.
I would goto the URL opera://about, take note of the "profile" path, close Opera and delete everything in the "Extensions" folder in the profile folder for starters.
@burnout426 I came across this looking for a solution to the same problem with the checkered pattern appearing briefly on youtube using Opra and this post really helped a lot, this issue wasn't problematic as it was just really irritating not knowing how to fix it and just being a nuisance to me, thanks for the help stranger I could never figure this out on my own, I just had to change my Angle flag to OpenGL as suggested for my Nvidia GPU and it works so far as I can see, no issues anymore! Thank again!
So recently I run into the same issue. Tried a couple of things but I found myself unable to rename the Opera Folder in the "App Data" sections since some files are in use. So I tried to deactivate the "Opera Browser Assistant" from Autostart. CTRL+SHIFT+ESC=>Autostart=>Deaktivate Opera Browser Assistant. Restarted and still found the folder in AppDate as writeprotected.
But I opened the Browser and everything was here instantly! So try to deaktivate "Opera Browser Assistant" from Autostart.
Do any bookmark changes survive a restart of Opera? For example, if you delete a bookmark, does it come back after you restart Opera or if you add a bookmark, is the bookmark gone after you restart Opera?