Some accented characters are not displayed correctly

[Palj]

I'm trying yWriter because I'm currently writing texts in LibreOffice, where there aren't that many options. I like yWriter, but it has one major flaw. It does not display Czech characters correctly in some places. Sometimes it replaces them with a question mark and somewhere with a letter without diacritics (for example, č displays as c, è - e, ů - u) In the editor, when I type them on the keyboard, they are displayed well, as soon as I save the text, it is displayed incorrectly. However, in the saved title and description of the chapter, they are displayed well even after saving. See screenshot.

[Peter T.]

If I'm not mistaken, you already raised this problem in an earlier post and got some answers.
The cause seems to me to be the Czech language file, which I think was created voluntarily by a user and probably contains some encoding errors.

You could try to correct this file yourself with a utf-8 capable text editor like notepad++ and send it to Simon.