Sorry mlauber71 for longer reply,
Now I still have problem already. testfont.knwf (12.2 KB)
I will upload the testing font in string manipulator problem and my environment configuration to you. Gofile - Free file sharing and storage platform
I think KNIME did not have font configuration in some component example 
from this picture it show L alphabet (L lower)
but my appearance font setting this font all 
and then I used python script node for text this result font is not shown.
result show ASCII result (This may be I not config UTF-8 in my env. I will try)
However, In any editor in KNIME , it should be global config. for appearance right ? If you can help me , I will very thankful to you. 