Created attachment 1409891 [details] Screenshot of system preferences showing lack of mouse settings Description of problem: KDE System Settings, Input Devices has no icon to adjust Mouse settings. User mouse settings ignored on start. Version-Release number of selected component (if applicable): Fedora 27, yum upgrade and reboot this morning plasma-desktop-5.12.2-1.fc27.x86_64 How reproducible: Every time. Steps to Reproduce: 1. Open System Settings 2. Click on Input Devices 3. See lack of Mouse icon Expected results: User preferences for left-handed mouse buttons should have been obeyed on KDE start, and there should be an icon in preferences to adjust settings.
This problem has been solved in plasma-desktop-5.12.3-2.fc27.x86_64, update your package using updates-testing repo and check it out.
*** This bug has been marked as a duplicate of bug 1555403 ***