Krita 4.3.0 source code is released on Jun 17. But the po/zh_CN/krita.po file inside the tarball doesn't match any revisions in SVN stable branch https://websvn.kde.org/branches/stable/l10n-kf5/zh_CN/messages/krita/krita.po?view=log As a result, translations doesn't match the app and some strings stay untranslated.
Created attachment 130864 [details] (diff of en_GB) left is from websvn stable branch the only revision of Jun 16; right is from download.kde.org 4.3.0 released in Jun 17 (po version Jun 16)
This is not a i18n bug, it's a krita bug.
The create_tarball_kf5.rb script boud used to pack releases always used the master branch to fetch translations from. We cannot change past releases, but this was fixed for 4.4 by https://invent.kde.org/graphics/krita/-/merge_requests/476 .
Thank you! Can wait to see how it'll work on 4.4!