UTF8 Problem since switch iw15.2.53 to iw15.4.2

[Victoria]

Hello,
i discover a new Problem which appears nows.
Explaining is simple. I like to use UTF8 Symbols for some Buttons.
But in new Version he Translates now everything to questionmark.
Can you check please what is going wrong?

Demopicture:
   


with friendly regards
Victoria