This bug was fixed in the package kscreenlocker - 5.12.6-0ubuntu0.1
--------------- kscreenlocker (5.12.6-0ubuntu0.1) bionic; urgency=medium
* New upstream release (5.12.6) (LP: #1779456)
-- Rik Mills <email address hidden> Sat, 30 Jun 2018 18:28:53 +0100
This bug was fixed in the package kscreenlocker - 5.12.6-0ubuntu0.1
---------------
kscreenlocker (5.12.6-0ubuntu0.1) bionic; urgency=medium
* New upstream release (5.12.6) (LP: #1779456)
-- Rik Mills <email address hidden> Sat, 30 Jun 2018 18:28:53 +0100