I can see it is copying glyphs from fonts other than from the one I chose.
It depends on the purpose you mean for this app. For many people, it would be very useful to know which Unicode characters are in a certain font. But anyway, if it will resort to picking characters out of another font, what is the point of the font selection anyway? It just says: try this font, but then try anything.
I would prefer that it restrict its search for glyphs to the selected font.
Thank you for your feedback!
You are right, the software always tries to use other fonts, if the chosen font does not support a charachter.
We actually planned to implement the behavior you describe, but had some problems with the font merging feature of the Qt-Framework, which is responsible for the font management. We will definitely keep looking for a solution and I hope we will be able to provide a version with a "font browsing"-feature in the future.