doesn't seem to work any more, the application header is displayed even though it should be disabled.
This can be seen in Angelfish and QMLKonsole.
Angelfish issue: https://invent.kde.org/plasma-mobile/angelfish/-/issues/60
This is a regression that happend recently.
STEPS TO REPRODUCE
1. Start Angelfish or QMLKonsole
2. See an application header that doesn't make sense
application header displayed even though it is set to None.
application header being invisible.
KDE Frameworks Version: 5.85.0
Qt Version: 5.15
Fixed by https://invent.kde.org/frameworks/kirigami/-/merge_requests/367
Fixed by Devin Lin with https://invent.kde.org/frameworks/kirigami/-/commit/f31d6cfc91a33da929afe7f8821fba0b96dbb6c1 in Frameworks 5.87