Private Use Area characters vanished in Lyx editor

[Richard Kimberly Heck]

On 4/19/23 13:53, Márton Payer wrote:
> Dear Developers!
>
> I'm a Windows user. Since the version of 2.1.1, Private Use Area
> characters vanished in Lyx editor. I have tried the version 2.3.7
> (Windows 10), these characters disappear on this interface as well.
>
> And these characters not appear neither in the exported pdf, nor in
> the pasted text from Lyx inserted to other editors.

Would it be possible to post an example file? I guess we would need the 
fonts, too.

Riki