This bug was fixed in the package lightdm - 1.26.0-0ubuntu2
--------------- lightdm (1.26.0-0ubuntu2) cosmic; urgency=medium
* Cherrypick upstream PR to add support for usr-merge in apparmor profile. LP: #1784023
-- Dimitri John Ledkov <email address hidden> Tue, 21 Aug 2018 00:05:28 +0100
This bug was fixed in the package lightdm - 1.26.0-0ubuntu2
---------------
lightdm (1.26.0-0ubuntu2) cosmic; urgency=medium
* Cherrypick upstream PR to add support for usr-merge in apparmor
profile. LP: #1784023
-- Dimitri John Ledkov <email address hidden> Tue, 21 Aug 2018 00:05:28 +0100