Unlike other KDE applications, KolourPaint does not seem to have joined the applications which use KHamburgerMenu to replace the Menubar.
When Application menus daemon in Background Services is running, most KDE applications have the KHamburgerMenu on the right of their toolbar, which allows for access to several features, and to the full File Edit View etc. submenus via More. Furthermore, the File Edit View etc. submenus are also accessible via the Application menu button in the KWin titlebar which can be enabled. A traditional File Edit View etc. menu bar is not present and cannot be enabled.
When the daemon is not running, the titlebar button is not present, and most apps can be switched between having a traditional menubar and no hambuger menu, or having a hamburger menu and no menubar, with Ctrl+M or a toggle in the hamburger menu. I understand everything I have described so far to be the intended behavior.
However, KolourPaint does not have a KHamburgerMenu nor a traditional menubar. Seemingly, the only way I can access any features not in the toolbar is by using the little hamburger menu in the titlebar, which must be added to the titlebar in System Settings and only exists if the daemon is running to expose the menubar to the window manager. This does not seem like correct behavior. I have seen screenshots of KolourPaint with a menubar, but do not know how to turn it on.
Operating System: openSUSE Tumbleweed 20260408
KDE Plasma Version: 6.6.3
KDE Frameworks Version: 6.24.0
Qt Version: 6.11.0
Kernel Version: 6.19.11-4.g63dce56-default (64-bit)
Graphics Platform: Wayland
KolourPaint Version: 25.12.3