thunderbird-mobile-config has file type conflict on
/uusr/lib/thunderbird/defaults.  In thunderbird, it is a symbolic link pointing
to ../../share/thunderbird/defaults. In thunderbird-mobile-config, it is a
directory. Therefore, the placement of files installed by
thunderbird-mobile-config depends on the order of unpacks. When removing
thunderbird-mobile-config, files may be left behind.

Kind regards

Helmut Grohne