Posting about your problem
After have done the steps above and confirmed that the problem is most probably in Opera, it's time to post about it.
Start the topic with a title that briefly describe the problem so people will know about what this is about.
Don't try to explain all the problem in the title.
Use tags to make it easy for other users to find posts about similar issues. If posting about Opera Mail then add the 'Opera Mail' tag
In the post (body) you should include the following information:
Your version of Windows
Your version of Opera
If the problem is with a page, a link to it
A screen-shot of the problem if it's related to something not showing as should
A description of the problem, including as much as information as possible
Steps to (try to) reproduce the issue
Expected behavior and actual one
Same issue here for several weeks.
For me it usually helps to restart the browser or even:
Right click in sidebar - setup sidebar - disable telegram - enable telegram.
However: Would be good if dev would take a look at it...
Anyone running Bitdefender and or Sandboxie and or Internet Download Manager (IDM)?
No. I don't have any software, that could possibly interfere with file reading or caching. What other advice do you have? To run a virus scan, reinstall Windows or maybe check the power cord?
@jan64x If you goto the URL opera://settings/content/flash, you will see an "ask first" option. By default it's disabled, which means "Block sites from running Flash (recommended)".
So, by default, Flash is blocked on every site. If you enable "ask first", it means "When encountering Flash, ask the user if they want to allow it for the site or not".
The "Your Flash settings will be kept until you quit Opera" warning on the page applies to all the Flash settings there. That means, when you close Opera, "Ask first" will be disabled (not in Chrome though. It will stay on, but warn you at startup that it's on), and the allow and block lists will be cleared.
If for some reason "Ask first" keeps reverting to enabled when you explicitly turn it off, that means there's something messed up with your preferences file.
If you really want Opera to not use Flash, uninstall it from your system. It doesn't come with Flash like Chrome does.