Os arquivos criados por scripts de instalação específicos do pacote não são listados.
De man dpkg :
dpkg-query actions
See dpkg-query(1) for more information about the following
actions.
-l, --list package-name-pattern...
List packages matching given pattern.
-s, --status package-name...
Report status of specified package.
-L, --listfiles package-name...
De man dpkg-query :
-L, --listfiles package-name...
List files installed to your system from package-name. When mul‐
tiple package-name are listed, the requested lists of files are
separated by an empty line, with the same order as specified on
the argument list. However, note that files created by package-
specific installation-scripts are not listed.