When MKAs have special vowels (ú, etc.) or characters from languages that do not use the Roman alphabet (Japanese, etc.) in the tags, they are not displayed correctly. Tags that I generate on my own with the UTF-8 encoding or with other programs such as MP3Tag do not display correctly in Poweramp but do display correctly in all other programs I've tried.
Poweramp version: build-945-bundle-play Full Version 64 bit.
Phone: Samsung Galaxy S21