What is my error in location switching?

[junecat]

Dear developers of wiki.js.
I am faithful user of your product.
But, I ran into a problem with using wikijs with russian language.

Surprisingly, after saving page with russian letters I get non-readable content of page (with many ?????? signs)

Furthermore, after change location in admin panel I get non-readable content of admin page.

This looks so mysterious, that I tested it several times in different environments and recorded a small video from the screen to demonstrate.

I'm sure I'm doing something wrong. But I am surprised that this bug lying on the surface shows up in such a simple case.
Could you comment on my mistakes?

( forgive me my lamer question, but I'm surprised that not all database fields use N-prefix for UTF-8 "wide" chars. May be, this is a reason for the problem I am having? )

About my environment:
I use OS, browser, etc with english location, and both english and russian languages in work (sites, texts, mails, etc).
I check the behavior on two varios client-server systems wih MS SQL and Postgres (in both cases).
I use docker installation in both cases.

Thanks in advance.

WBR, Konstantin Davydov

https://t.me/konst_dav
[email protected]

wikijs-question.mp4