This is similar to https://bugs.kde.org/show_bug.cgi?id=420364, but somewhat reversed. It appears like the default view on start is now "Mail" instead of "Summary", but the window is just called "Kontact" instead of "Mail - Kontact". According to openQA, this broke on 2021-07-13. Last good: https://openqa.opensuse.org/tests/1837934#step/kontact/17 First bad: https://openqa.opensuse.org/tests/1838097#step/kontact/18