[Pkg-kde-extras] Bug#743824: digikam: Digikam no longer displays any album thumbnails

[MH]

Package: digikam
Version: 4:5.6.0-4+b2
Followup-For: Bug #743824

Dear Maintainer,

Digikam v. 5.6.0 in Debian Buster (Build date: Dec 21 2017 (target: Debian)) no longer displays
thumbnails under any of the albums in my collection. As far as I can tell, there has been no
recent update of digikam and it has been functioning normally.

I tried deleting the databases, rebuilding thumbnails, purging digikam and reinstalling.
Problem remains. No error messages displayed at any time.

-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.15.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages digikam depends on:
ii  digikam-data          4:5.6.0-4
ii  digikam-private-libs  4:5.6.0-4+b2
ii  kipi-plugins          4:5.6.0-4+b2
ii  libc6                 2.27-3
ii  libgcc1               1:8-20180402-1
ii  libkf5configcore5     5.44.0-1
ii  libkf5coreaddons5     5.44.0-1
ii  libkf5filemetadata3   5.44.0-1
ii  libkf5i18n5           5.44.0-1
ii  libqt5core5a          5.10.1+dfsg-5
ii  libqt5gui5            5.10.1+dfsg-5
ii  libqt5sql5            5.10.1+dfsg-5
ii  libqt5sql5-mysql      5.10.1+dfsg-5
ii  libqt5sql5-sqlite     5.10.1+dfsg-5
ii  libqt5widgets5        5.10.1+dfsg-5
ii  libstdc++6            8-20180402-1
ii  perl                  5.26.1-5

Versions of packages digikam recommends:
ii  ffmpegthumbs               4:17.08.3-1
ii  firefox-esr [www-browser]  52.7.3esr-1
ii  konqueror [www-browser]    4:17.08.3-2

Versions of packages digikam suggests:
ii  digikam-doc     4:5.6.0-4
ii  systemsettings  4:5.12.4-1

-- no debconf information