Line numbers are not displayed in backend (gutenberg editor)

On the frontend, everything works beautifully, but in the Gutenberg editor, the line numbers are not displaying correctly (only first line number is showing). Additionally, line highlighting is not functioning. What do I need to do to make the plugin work correctly on the backend as well, in the Gutenberg block editor? I tested on many templates with no additional plugins. The same bad result.

Thist is how it’s looks: