Mentions with latin extended still doesn't work

Hi there,

a few weeks ago I posted about metions with latin extended chars which doesn't work in EasyDiscuss:
https://stackideas.com/forums/mentions-not-working-with-latin-extended-chars

As I see in EasyDiscuss 4.0.13 on changelog, this bus should be repaired, but still occurs.

The problems is when I try to enter name with latin extended char, e.g.:

I try to enter @Małgosia

and when I put " ł " char, it hides me tip with correct person and makes this mention as unactive.

The same situation when I try to enter @Łukasz

Please inspect this bug again :-)

Best regards!
Adam