That's how it looks: https://imgur.com/WmJ4U8q.png If I hover the cursor over the blank places (between Screen Locking and Display Conf) systemsettings crashes. In my case I don't have powerdevil and user-manager. If I install powerdevil, the icon appears at the blank space and things work normally.
Git commit ec90e4066c16eae9239508bd623203bf0b5e3998 by Kai Uwe Broulik. Committed on 21/10/2019 at 11:08. Pushed by broulik into branch 'Plasma/5.17'. Filter invalid services in most used model Otherwise there'll be a blank spot. FIXED-IN: 5.17.1 Differential Revision: https://phabricator.kde.org/D24818 M +7 -0 sidebar/SidebarMode.cpp https://commits.kde.org/systemsettings/ec90e4066c16eae9239508bd623203bf0b5e3998