Comment 6 for bug 139776

This is fixed in Ubuntu 18.04 LTS, at least for me, probably because a newer latexmk version is included. :-)

"Latexmk: This is Latexmk, John Collins, 1 January 2015, version: 4.41."

$ cat /etc/os-release
NAME="Ubuntu"
VERSION="18.04.2 LTS (Bionic Beaver)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 18.04.2 LTS"
VERSION_ID="18.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=bionic
UBUNTU_CODENAME=bionic
$ latexmk --version

Latexmk, John Collins, 1 January 2015. Version 4.41
$ apt-cache policy latexmk
latexmk:
  Installed: 1:4.41-1
  Candidate: 1:4.41-1
  Version table:
 *** 1:4.41-1 500
        500 http://de.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
        500 http://de.archive.ubuntu.com/ubuntu bionic/universe i386 Packages
        100 /var/lib/dpkg/status

Thanks,
Erik