I have the same problem, unattended-upgrades ignores files under /etc/apt/preferences.d/*, but also after restarting the PC. The result is that unattended-upgrades breaks regularly my system :(
To fix this I have to run `apt upgrade` after unattended-upgrades updated programs to problematic versions.
As a workaround I blacklisted these programs in unattended-upgrades config: /etc/apt/apt.conf.d/50unattended-upgrades
I have the same problem, unattended-upgrades ignores files under /etc/apt/ preferences. d/*, but also after restarting the PC. The result is that unattended-upgrades breaks regularly my system :(
To fix this I have to run `apt upgrade` after unattended-upgrades updated programs to problematic versions.
As a workaround I blacklisted these programs in unattended-upgrades config: /etc/apt/ apt.conf. d/50unattended- upgrades