TFT_eSPI issue with characters from unicode Basic Latin and Latin-1 Supplement

[kullsv1]

Hello community,
I'm working on a private project that should display some data on a 2,8" TFT display driven by an ESP32. Based on the amount of examples of "TFT_eSPI" I've already overcome a few hurdles like flicker free refreshing the screen using sprites and including some more TTFs by configure and compress them with the tool "Processing". So far so good - but what I didn't get is to display a simple Euro sign "€".
I attached a screenshot showing that I can display signs from unicode group "Basic Latin" U+20...U+7E and "Latin-1 Supplement" U+A0...U+DF but somehow there is a range in between from U+7F...U+9F that can't be displayed in correct manner...

Does anybody now what goes wrong here ?

main.cpp.txt
calibri22LatinFont.h.txt