Created attachment 120316 [details]
Screenshot for the bug, with minor comments
Okular typewrite (annotation) doesn't show Chinese characters on the page (but is displayed normally in the popup note).
STEPS TO REPRODUCE
1. Open a PDF file with okular
2. Select "typewriter" annotation tool
3. type any Chinese (e.g. "啊啊啊" (ahhhh)), surrounded with Latin characters (the second part is not necessary, but useful to test)
Chinese characters are not shown.
If surround the Chinese characters with Latin characters, the Latin part is shown and no space is preserved for Chinese characters. (This rules out font issues; I also checked the font which is a valid Chinese font, Source Han Sans.)
Chinese characters are displayed correctly.
KDE Plasma Version: N/A (I'm using Awesome WM)
KDE Frameworks Version: 5.58.0
Qt Version: 5.12.3
*** This bug has been marked as a duplicate of bug 310154 ***
Thanks, Yuri, for redirecting to the existing bug report :)
Bug I suppose it's better to mark as duplicated of 305534.
*** This bug has been marked as a duplicate of bug 305534 ***