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.
I think my python environment not setting locale THAI( that I will change python prompt to show UNICODE.
I did not try → this is one solution but another issue, I cannot show locale character on KNIME’s console.
I try to change any font or setting but it is not support. (on string manipulate)