(ogg) vorbis metadata in music ignored if "COMPILATION" is absent

[Moses Moore]

I have many .ogg music files with valid metadata, but the metadata does not appear in the Clementine "Library" nor playlist queue display. ie. the following file:
{{{
$ ogginfo 02-Sisters_of_Mercy.ogg
Processing file "02-Sisters_of_Mercy.ogg"...

New logical stream (#1, serial: 00007da8): type vorbis
Vorbis headers parsed for stream 1, information follows...
Version: 0
Vendor: Xiphophorus libVorbis I 20011231 (1.0 rc3)
Channels: 2
Rate: 44100

Nominal bitrate: 160.032000 kb/s
Upper bitrate: 4294967.295000 kb/s
Lower bitrate: 4294967.295000 kb/s
User comments section follows...
 ALBUM=The Best of Leonard Cohen
 ARTIST=Leonard Cohen
 DATE=1975
 GENRE=Folk
 TITLE=Sisters of Mercy
 TRACKNUMBER=02
Vorbis stream 1:
 Total data length: 4293559 bytes
 Playback length: 3m:36.106s
 Average bitrate: 158.942214 kb/s
Logical stream 1 ended
}}}

... appears in the "Unknown" part of the Library feature, and when queued appears with title "02-Sisters_of_Mercy.ogg" and length "3:36" but no Artist nor Album.

If I use Clementine's tool for editing information, and make an inconsequential change, I see that Clementine adds a new tag:
{{{
$ vorbiscomment -l 02-Sisters_of_Mercy.ogg
ALBUM=The Best of Leonard Cohen
ARTIST=Leonard Cohen
COMPILATION=0
DATE=1975
GENRE=Folk
TITLE=Sisters of Mercy
TRACKNUMBER=2
}}}

If I use `vorbiscomment -a -t "COMPILATION=0"` to change other ogg vorbis files, the "Library" and playlist in Clementine updates and populates the UI with the metadata.

According to the Vorbis Comment spec, "COMPILATION" is not a required field, so I feel Clementine should not refuse to process the other valid metadata if this tag is absent.
https://xiph.org/vorbis/doc/v-comment.html

Workaround: write a bashscript to add the superfluous "COMPILATION=0" tag to all my *.ogg files.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: clementine 1.3.1+git276-g3485bbe43+dfsg-1
ProcVersionSignature: Ubuntu 4.13.0-25.29-generic 4.13.13
Uname: Linux 4.13.0-25-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
CurrentDesktop: XFCE
Date: Sun Jan 21 15:26:57 2018
InstallationDate: Installed on 2016-06-05 (595 days ago)
InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: clementine
UpgradeStatus: Upgraded to artful on 2017-10-22 (91 days ago)