* Compiled KWin with D15720
* Ran `build/bin/kwin_x11 --replace`
* Confirmed Informative does not work, while other QML skins like Grid (code named present_windows) does. (Note: Breeze does not work, a different `plasma-workspace` patch will fix it).
* Manually patched `/usr/share/kwin/tabbox/informative/contents/ui/main.qml`
* Restarted KWin with `build/bin/kwin_x11 --replace`
* The Informative skin now works