Comment 4 for bug 1870519

Yes, the Ubuntu (default) session and its original Dock (no extra extension installed)
Basically, the default desktop setup with the steps above.

The journal log:

Apr 04 11:16:54 Ubuntu dbus-daemon[1398]: [session uid=1000 pid=1398] Activating via systemd: service name='org.freedesktop.Tracker1' unit='tracker-store.service' requested by ':1.35' (uid=1000 pid=1649 comm="/>
Apr 04 11:16:54 Ubuntu systemd[1375]: Starting Tracker metadata database store and lookup manager...
Apr 04 11:16:54 Ubuntu dbus-daemon[1398]: [session uid=1000 pid=1398] Successfully activated service 'org.freedesktop.Tracker1'
Apr 04 11:16:54 Ubuntu systemd[1375]: Started Tracker metadata database store and lookup manager.
Apr 04 11:16:54 Ubuntu dbus-daemon[1398]: [session uid=1000 pid=1398] Activating via systemd: service name='org.freedesktop.Tracker1.Miner.Extract' unit='tracker-extract.service' requested by ':1.35' (uid=1000 >
Apr 04 11:16:54 Ubuntu systemd[1375]: Starting Tracker metadata extractor...
Apr 04 11:16:54 Ubuntu tracker-extract[35811]: Set scheduler policy to SCHED_IDLE
Apr 04 11:16:54 Ubuntu tracker-extract[35811]: Setting priority nice level to 19
Apr 04 11:16:54 Ubuntu dbus-daemon[1398]: [session uid=1000 pid=1398] Successfully activated service 'org.freedesktop.Tracker1.Miner.Extract'
Apr 04 11:16:54 Ubuntu systemd[1375]: Started Tracker metadata extractor.
Apr 04 11:17:01 Ubuntu CRON[36001]: pam_unix(cron:session): session opened for user root by (uid=0)
Apr 04 11:17:01 Ubuntu CRON[36003]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Apr 04 11:17:01 Ubuntu CRON[36001]: pam_unix(cron:session): session closed for user root
Apr 04 11:17:04 Ubuntu systemd[1]: apt-daily-upgrade.service: Succeeded.
Apr 04 11:17:04 Ubuntu systemd[1]: Finished Daily apt upgrade and clean activities.
Apr 04 11:17:05 Ubuntu systemd[1375]: tracker-extract.service: Succeeded.

I can reproduce the issue all the time and provide some screenshots as well.