Problems Changing Default Application Text Font

Hello,

I am using PB 12.5.2 5609 Win 7 Pro 64bit.

Lately, I am experiencing problems trying to set the default text font for application objects. I open the additional properties dialog and then change text font to the required font. Now If I go back, I get this:

or

I am able to change column, header and label fonts. Just text font does not seem to work.

Any idea what is going on and how to fix it?

Thanks.