When I decode Cyrillic text block from the clipboard in Kleopatra, I always got a corrupted UTF data (see screen in attach), but if I save the same encrypted text as file and decode it in a command prompt through gpg2.exe it’s looks normally. How to fix this behavior in the GUI app?
I have exact the same problem and have no fix for it!
Can someone help?
Hi, thanks for the report.
Can you help to turn this into a problem report that developers would
immedeately work on?
This would mean: Create a problem report in the tracker.
Make sure that is a test case that will show the issue even for a developer that cannot handle cyrillic text, e.g. a script or example files and screenshots to compare it to.
If you are able to, you could try fixing this in Kleo as well, the developers like patches of course. 
Done, report is here: https://wald.intevation.org/tracker/index.php?func=detail&aid=6475&group_id=11&atid=126