Package manager unaware of files

Binary package hint: msttcorefonts

output of:
  dpkg -L msttcorefonts
is not listing these files:
  ls /usr/share/fonts/truetype/msttcorefonts/
Andale_Mono.ttf Georgia.ttf
andalemo.ttf georgiaz.ttf
arialbd.ttf impact.ttf
arialbi.ttf Impact.ttf
Arial_Black.ttf timesbd.ttf
Arial_Bold_Italic.ttf timesbi.ttf
Arial_Bold.ttf timesi.ttf
Arial_Italic.ttf Times_New_Roman_Bold_Italic.ttf
ariali.ttf Times_New_Roman_Bold.ttf
arial.ttf Times_New_Roman_Italic.ttf
Arial.ttf Times_New_Roman.ttf
ariblk.ttf times.ttf
comicbd.ttf trebucbd.ttf
Comic_Sans_MS_Bold.ttf trebucbi.ttf
Comic_Sans_MS.ttf Trebuchet_MS_Bold_Italic.ttf
comic.ttf Trebuchet_MS_Bold.ttf
courbd.ttf Trebuchet_MS_Italic.ttf
courbi.ttf Trebuchet_MS.ttf
Courier_New_Bold_Italic.ttf trebucit.ttf
Courier_New_Bold.ttf trebuc.ttf
Courier_New_Italic.ttf Verdana_Bold_Italic.ttf
Courier_New.ttf Verdana_Bold.ttf
couri.ttf verdanab.ttf
cour.ttf Verdana_Italic.ttf
Georgia_Bold_Italic.ttf verdanai.ttf
Georgia_Bold.ttf verdana.ttf
georgiab.ttf Verdana.ttf
Georgia_Italic.ttf verdanaz.ttf
georgiai.ttf webdings.ttf
georgia.ttf Webdings.ttf
which it should list.

Also the reverse is also not working. output of:
  dpkg -S /usr/share/fonts/truetype/msttcorefonts/arial.ttf
and:
  dpkg -S /usr/share/fonts/truetype/msttcorefonts/Arial.ttf
results in an error, which it should not.

I know the package is containing an archive that is extracted to create these files. Nevertheless, the package manager can/should be tricked when installing the package to be aware that these files belong to the package in both directions of look up. From file to package and from package to file.

The same problem exists for xfonts-mathml package.