Using Plasma 5.13.5 I can no longer keep mouse setting to 'left handed' in system settings - although settings show mouse as 'left handed' and it will work OK it will revert to 'right handed' on reboot. When I go back into settings it is clearly marked 'left handed' but I have to change it back to right handed and then to left handed for it to work. It will then work OK until I reboot. Is this a known bug? Is there anything I can do to fix this, perhaps a config file I can edit? Very annoying...