I also can confirm this started happening after the following upgrade:
Start-Date: 2019-02-21 20:42:54 Commandline: apt-get dist-upgrade Requested-By: [redacted] Upgrade: libgs9:amd64 (9.26~dfsg+0-0ubuntu0.18.04.4, 9.26~dfsg+0-0ubuntu0.18.04.5), ghostscript-dbg:amd64 (9.26~dfsg+0-0ubuntu0.18.04.4, 9.26~dfsg+0-0ubuntu0.18.04.5), ghostscript-doc:amd64 (9.26~dfsg+0-0ubuntu0.18.04.4, 9.26~dfsg+0-0ubuntu0.18.04.5), ghostscript:amd64 (9.26~dfsg+0-0ubuntu0.18.04.4, 9.26~dfsg+0-0ubuntu0.18.04.5), ghostscript-x:amd64 (9.26~dfsg+0-0ubuntu0.18.04.4, 9.26~dfsg+0-0ubuntu0.18.04.5), libgs9-common:amd64 (9.26~dfsg+0-0ubuntu0.18.04.4, 9.26~dfsg+0-0ubuntu0.18.04.5) End-Date: 2019-02-21 20:45:26
There is no doubt it is due to that "upgrade".
I also can confirm this started happening after the following upgrade:
Start-Date: 2019-02-21 20:42:54 0-0ubuntu0. 18.04.4, 9.26~dfsg+ 0-0ubuntu0. 18.04.5) , ghostscript- dbg:amd64 (9.26~dfsg+ 0-0ubuntu0. 18.04.4, 9.26~dfsg+ 0-0ubuntu0. 18.04.5) , ghostscript- doc:amd64 (9.26~dfsg+ 0-0ubuntu0. 18.04.4, 9.26~dfsg+ 0-0ubuntu0. 18.04.5) , ghostscript:amd64 (9.26~dfsg+ 0-0ubuntu0. 18.04.4, 9.26~dfsg+ 0-0ubuntu0. 18.04.5) , ghostscript-x:amd64 (9.26~dfsg+ 0-0ubuntu0. 18.04.4, 9.26~dfsg+ 0-0ubuntu0. 18.04.5) , libgs9-common:amd64 (9.26~dfsg+ 0-0ubuntu0. 18.04.4, 9.26~dfsg+ 0-0ubuntu0. 18.04.5)
Commandline: apt-get dist-upgrade
Requested-By: [redacted]
Upgrade: libgs9:amd64 (9.26~dfsg+
End-Date: 2019-02-21 20:45:26
There is no doubt it is due to that "upgrade".