plasma 5.16.2 here. I have Desktop Behavior -> Screen Locking -> [V] Lock screen automatically after: 10 mins But the screen is never locked even if I leave the system alone for more than 10 minutes. I recall that it used to work quite recently. Not sure when it got broken, maybe after a plasma upgrade.
Does anyone else have this problem? Or, on the contrary, can anyone confirm that the feature works for them? Thank you! -- Andriy Gapon