Font Change After Combining Files in Acrobat DC

[Tina5C5A]

All of a sudden after combining a few files in DC , the fonts on the application interface changed.

Like name of my Tools all show a different font, all buttons and icons now have a different font , not the typical Adobe font that is set on the interface.

Anyone know what may have caused this and how I can fix?

Thanks 

[Karl Heinz Kremer]

It sounds like the font on the Acrobat user interface changes, is that correct, or are you referring to the fonts in the resulting combined document?