When trying to add a Typewriter annotation to a PDF in Okular only Latin letters are visible.
STEPS TO REPRODUCE
1. Open any PDF in Okular
2. Press F6, select Typewriter annotation tool
3. Create an annotation with this text:
"annotation анотація annotation анотація"
Only latin letters are visible, Cyrillic letters don't even take any space between Latin.
All UTF-8 characters presented in some form.
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8
All the letters are visible when it's not a PDF, tried with opening a Markdown file.
*** This bug has been marked as a duplicate of bug 305534 ***