Version: 1.0 (using 4.4.2 (KDE 4.4.2), Kubuntu packages) Compiler: cc OS: Linux (x86_64) release 2.6.32-19-generic khotkeys always had an entry called Internet which was used to start the default browser (and was double-assigned with the Standard Keyboard Shortcut for Home, but that's another story). It seems like that entry got amiss in KDE 4.4.2. I know that I can just assign a shortcut to an arbitrary application, but I think there should be an entry in the Global Keyboard Shortcuts KCM like for your mail client and file manager.
It's been a decade but this still isn't a thing. There is no shortcut to launch the default browser in KDE Neon Unstable.
As announced in https://pointieststick.com/2023/07/26/what-we-plan-to-remove-in-plasma-6/ and https://community.kde.org/Plasma/Plasma_6#Removals, I'm afraid KHotKeys has reached end-of-life in Plasma 6. Accordingly, all bug reports and feature requests for it must be closed now. Most of what KHotKeys could do can already be done with the newer KGlobalAccel system in Plasma 6. A few features such as mouse gestures and triggering conditions based on changes to window states are not yet implemented in the new system. These will be added in the future if and when resources materialize for them, and/or when a kind soul submits patches to implement them! :) Meanwhile, the 3rd-party "Mouse Actions" app (https://github.com/jersou/mouse-actions) may be usable for implementing your own mouse gestures again. Thanks for your understanding, everyone.