scribus

Scribus doesn't "deliberately" break compatibility; it was completely unusable with Wayland and they added friendly message. It also doesn't really go out of its way to do so as you're suggesting – it just checks Application::platformName() == "wayland" and that's it. Maybe it's better now with Wayland and that check can be removed. I don't know. See: https://bugs.scribus.net/view.php?id=16998 and https://github.com/scribusproject/scribus/commit/74d8d7ef7

> Custom Actions > It is now possible to arrange custom actions in cascading submenus. Just enter the same submenu name for a custom action in order to place it into the same menu. If you require multiple menu levels, you can achieve that by using `/` in the path of the 'Submenu' entry. In 2012 KDE AppMenu Runner was presented as a "plugin which allows to browse, search and select the menubar of the active application".[0] In 2019 I requested to somehow implement a feature, similar to Blender's "Menu Search"/"Operator Search"[1], into Olive Video Editor.[2] After resulted0 "Action Search" was implemented into Olive Video Editor (`/`) shortcut, its code was reused for "Action Search" in Scribus (`Ctrl+/`) and then converted into Qt5-plugin.[3,4] Year later, this Qt5-plugin code reused in for implementing global "Action Search" in helloSys