This is because you removed /var/lib/mythtv/recordings. It is included in the package, so not a bug in the package ~$ dpkg -L mythtv-backend | grep /mythtv/recordings /var/lib/mythtv/recordings
This is because you removed /var/lib/ mythtv/ recordings. mythtv/ recordings
It is included in the package, so not a bug in the package
~$ dpkg -L mythtv-backend | grep /mythtv/recordings
/var/lib/