Comment # 18 on bug 1020034 from Wolfgang Bauer

As I found an old (pressed) mixed-mode CD lying around, I gave it a try.
And I experienced the same problem: KDE only offered AudioCD options, it showed
a generic "CDROM" label instead of the actual one, and it wasn't possible to
mount the data track.
Also, it didn't even show up in /dev/disk/by-label/ and /dev/disk/by-uuid/...

Updating libblkid1 (to 2.29, or 2.28 with the mentioned patch) fixed it here
too.
Also blkid shows it now (it doesn't with the standard libblkid1 2.28):
wolfi@amiga:~/Desktop> blkid
/dev/fd0: SEC_TYPE="msdos" LABEL="LEER" UUID="29EC-76CA" TYPE="vfat"
/dev/sdb1: UUID="4E28576628574C59" TYPE="ntfs" PARTUUID="e3c1e3c1-01"
/dev/sdb2: UUID="e83f9e68-7d5e-4128-9561-877252a0fe83" TYPE="swap"
PARTUUID="e3c1e3c1-02"
/dev/sda1: UUID="e2c9b751-d87b-4dbd-b240-391e01dbd8cd" TYPE="reiserfs"
PTTYPE="dos" PARTUUID="d599471e-01"
/dev/sdc1: SEC_TYPE="msdos" UUID="1E63-B137" TYPE="vfat" PARTUUID="5d2e2084-01"
/dev/sdc2: UUID="2016-11-09-10-10-35-00"
LABEL="openSUSE-Leap-42.2-NET-x86_64028" TYPE="iso9660" PARTUUID="5d2e2084-02"
/dev/sr0: UUID="2001-02-09-15-59-00-00" LABEL="AmigaOS3.9" TYPE="iso9660"

For completeness, here's the difference in the output of "udisksctl info -b
/dev/sr0":
@@ -12,12 +12,12 @@
     HintPartitionable:          false
     HintSymbolicIconName:       
     HintSystem:                 false
-    Id:                         
-    IdLabel:                    
-    IdType:                     
-    IdUUID:                     
-    IdUsage:                    
-    IdVersion:                  
+    Id:                         by-uuid-2001-02-09-15-59-00-00
+    IdLabel:                    AmigaOS3.9
+    IdType:                     iso9660
+    IdUUID:                     2001-02-09-15-59-00-00
+    IdUsage:                    filesystem
+    IdVersion:                  Joliet Extension
     MDRaid:                     '/'
     MDRaidMember:               '/'
     PreferredDevice:            /dev/sr0
@@ -25,6 +25,10 @@
     Size:                       621805568
     Symlinks:                   /dev/cdrom
                                 /dev/disk/by-id/ata-TSSTcorpDVD-ROM_TS-H352A
+                                /dev/disk/by-label/AmigaOS3.9
                                 /dev/disk/by-path/pci-0000:00:0f.1-ata-2
                                
/dev/disk/by-path/pci-0000:00:0f.1-scsi-3:0:0:0
+                                /dev/disk/by-uuid/2001-02-09-15-59-00-00
                                 /dev/dvd
+  org.freedesktop.UDisks2.Filesystem:
+    MountPoints:        

So, would it be possible to do an update please?
(either just adding that patch or alternatively an update to 2.28.1 which
contains that fix)

util-linux is coming from SLE...