In the text in Russian, the word transition / deletion of words works crookedly, how can I fix this?

Question

vim

If you type text in Russian in Vim, and then try to switch by words (w / b), then the cursor can go one letter or several, and not the whole word. Same thing with deleting words (dw). How can this be fixed?

Windows 10
Vim 8.2.2824 (x86)
Russian text input method:
- system
keymap changer - built-in keymap changer (set keymap=russian-jcukenwin)

Answer 1

The error was in the encoding of the text of the document, it is solved by setting the encoding in the settings
set encoding=utf-8
Oleg , thanks for the help