resolvonf unable to finish installation if 'no changes to resolv.conf' selected

[George Shuklin]

I answered 'no changes to resolv.conf' to dpkg configuration question (I have maximum verbosity for dpkg).

resolvconf is unable to finish installation:

Setting up resolvconf (1.79ubuntu9) ...
resolvconf-pull-resolved.service is a disabled or a static unit, not starting it.
resolvconf-pull-resolved.service is a disabled or a static unit, not starting it.
Processing triggers for resolvconf (1.79ubuntu9) ...
W: APT had planned for dpkg to do more than it reported back (0 vs 4).
   Affected packages: resolvconf:amd64

UPD: I've changed answer to 'yes' and installation was finished. But the bug is still valid.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: resolvconf 1.79ubuntu9
ProcVersionSignature: Ubuntu 4.13.0-25.29-generic 4.13.13
Uname: Linux 4.13.0-25-generic x86_64
ApportVersion: 2.20.8-0ubuntu8
Architecture: amd64
CurrentDesktop: X-Cinnamon
Date: Mon Feb 12 11:07:46 2018
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-07-19 (1668 days ago)
InstallationMedia: Xubuntu 13.04 "Raring Ringtail" - Release i386 (20130423.1)
PackageArchitecture: all
SourcePackage: resolvconf
UpgradeStatus: Upgraded to bionic on 2017-06-22 (234 days ago)