Hey @kuba-orlik
Thanks for contributing to the Polish Discourse translation 
This particular issue:
only occured for a very brief time and is now fixed. It is not related to any of the other issues in your post. Is your site up to date? that issue should go away as soon as you update.
For the other two issues. Can you please provide more context? Like what the issues are and where you’re seeing them in the interface so that we can try to fix them?
I know this is the notification panel in the user menu, but I’m not sure what the issue is here.
I’m also not sure what part of the interface this represents.
