Private Use Characters - as viewed in Microsoft Excel

[Fonts]

I have created some Private Use Characters.
When viewed on the Microsoft Excel formula bar, it's as shown in the attached image.
I don't know whether this relates to FontCreator or the computer itself. The characters are an Asian font, maybe because the computer is from there.
Is there a way to change the default in the formula bar. I know in my previous computer the Private Use Characters were a square/rectangle shape, which was easier to process.

[Erwin Denissen]

I'm sorry, but I have no clue of what you intend to do, or what you feel goes wrong. Maybe you can explain it some more, or maybe someone else is able to help.

[Fonts]

Perhaps if you open Excel, insert a Private Use Character and see what it looks like in the formula bar.
The formula bar is shown in attached image.

As a guess, it may look like a square/rectangle character.

My question relates to how I can change this default font.

[Erwin Denissen]

I guess it uses the system default font. That can only be changed globally.

[Fonts]

OK no worries, thanks.