You use the strlen function to determine the length of the topic title during quick editing (by click). Therefore, the length in Russian is determined to be 2 times longer than the real one.

And when fully editing mb_strlen. I created the theme a year ago, it still hasn't been fixed 🙁

Thank you for bringing this issue to our attention! I can confirm this should be further reviewed and I have logged an internal bug report for our development team to investigate and address as necessary, in a future maintenance release.

 

Thanks a million, Jim 🙃