@MultiSingularity said in uBlock Origin:
@kacperopera: Uninstall it, clear cache and cookies, restart opera, reinstall. It fixes it, at least temporarily. Needed to do it again about a week later, but worth it honestly.
You shouldn't have to uninstall a browser unless you are having error when launching the browser or when trying to update it.
Just about all browser data that matters will be in the %AppData% and %LocalAppData% folders. Some use just the \AppData\Local\ (ie. MSEdge, Chrome, Brave) and some browsers use both the \AppData\Local\ and \AppData\Roaming\ folders (Opera, Firefox, Waterfox).
Browser folder under \Local folder typically contains static data and maybe the session data where \Roaming folder will have bulk of the data and most importantly, user, extensions and other profile specific data.
If a user is experience problems with their browser on a specific site, best to make sure their browser is up-to-date, then start a "private" aka "incognito" session which will effectively disable all extensions, cookies and dynamic cache for that session. Check to see if the site is still having issues or not. If not, you know cache, cookies and/or extensions are likely the culprit. If still having issues, then more than likely a more complex issue inside the user browser profile to be the culprit.
If that is the case, I'd simply close the browser in question, then rename the browser folder to something that starts with OLD_. So, if using Opera browser, rename both "Opera Software" folder under \AppData\Local and \AppData\Roaming so they read:
"C:\Users\youruser\AppData\Local\OLD_Opera Software" and "C:\Users\youruser\AppData\Roaming\OLD_Opera Software"
Then fire up Opera and visit the site again to see if you still have the issue or not.
When you uninstall a browser, the browser's user data folder(s) under \AppData\ are not related. If renaming the folders didn't fix the issue, then uninstalling the browser from the system would make sense as well as hiding the existing data folders as mentioned above.