No Polish Characters in FB Messenger on Chrome 85.0.4183.121 (Win 10) - Fix Needed

Hello,
I have a computer with Win 10 and a Google Chrome browser Version 85.0.4183.121, the problem is that when I enter Facebook normally through the site and enter chat / messenger, when writing a message, Polish characters are changed to "??" question marks.
What can it be related to?
If someone does not know if I am talking about it, I suggest you try - log in to the fb site in a chrome browser and try to send a message to someone with Polish characters, whether it will be normal or without Polish characters.

Surprisingly, I tried to enter Internet Explorer and there is no problem with it, i.e. as if the problem was in the browser itself.
Anyone met with something like this?
Thanks!

Can the person receiving messages on Messenger see question marks too?

Yes, he sees too, with the rest this person definitely sees them ...
And when I open the window of this message again, it is not there when I send it.

Hmm. Do you have a Polish programmer's keyboard layout? It can be toggled with Ctrl + Shift

And where can you check it in Windows 10?
But it's strange because both at work on a Lenovo laptop there are no Polish characters in the messenger and at home on a desktop PC

Both have windows 10, but probably other versions.
If I enter the settings - the language should also be Polish / programmer there?
Because there is only Polish.
So I go to the start - gear (settings) and time and language ...

If you type y instead of z, you don't have a programmer, only 214.

I have noticed the same problem with myself. I write through a browser in Facebook messenger on a computer. I write normally with Polish characters. I can see that the characters are normal. I click enter, the message is displayed and I can see it normally. When I close my browser and enter the message again, I see the same but instead of Polish characters I have question marks. I also go to the mobile phone through the browser on fb and I also see question marks. But when I write from a mobile phone through a browser, then it's ok. Obviously something with a browser on the computer. Also win10 and chrome.

Edit. The problem on the computer occurs when I write on fb in the chat window, and when I switch to the entire messenger window, I write everything normally ...

I have the same problem on all computers.
Fortunately, it is unfortunate that more people have it, so maybe it will be resolved sooner.

And as it was, messenger.com is fine, the only problem is in chat windows when using "regular" Facebook.

Has anyone managed to do something about it?
Because it's a bit tedious to remember where to write and where not