/usr/share/perl5/UI/Dialog/ is in libui-dialog-perl 1.09-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/UI/Dialog/Backend/
/usr/share/perl5/UI/Dialog/Backend.pm
/usr/share/perl5/UI/Dialog/Backend.pod
/usr/share/perl5/UI/Dialog/Backend/ASCII.pm
/usr/share/perl5/UI/Dialog/Backend/ASCII.pod
/usr/share/perl5/UI/Dialog/Backend/CDialog.pm
/usr/share/perl5/UI/Dialog/Backend/CDialog.pod
/usr/share/perl5/UI/Dialog/Backend/GDialog.pm
/usr/share/perl5/UI/Dialog/Backend/GDialog.pod
/usr/share/perl5/UI/Dialog/Backend/KDialog.pm
/usr/share/perl5/UI/Dialog/Backend/KDialog.pod
/usr/share/perl5/UI/Dialog/Backend/Nautilus.pm
/usr/share/perl5/UI/Dialog/Backend/Nautilus.pod
/usr/share/perl5/UI/Dialog/Backend/Whiptail.pm
/usr/share/perl5/UI/Dialog/Backend/Whiptail.pod
/usr/share/perl5/UI/Dialog/Backend/XDialog.pm
/usr/share/perl5/UI/Dialog/Backend/XDialog.pod
/usr/share/perl5/UI/Dialog/Backend/XOSD.pm
/usr/share/perl5/UI/Dialog/Backend/XOSD.pod
/usr/share/perl5/UI/Dialog/Backend/Zenity.pm
/usr/share/perl5/UI/Dialog/Backend/Zenity.pod
/usr/share/perl5/UI/Dialog/Console.pm
/usr/share/perl5/UI/Dialog/Console.pod
/usr/share/perl5/UI/Dialog/GNOME.pm
/usr/share/perl5/UI/Dialog/GNOME.pod
/usr/share/perl5/UI/Dialog/Gauged.pm
/usr/share/perl5/UI/Dialog/Gauged.pod
/usr/share/perl5/UI/Dialog/KDE.pm
/usr/share/perl5/UI/Dialog/KDE.pod
/usr/share/perl5/UI/Dialog/Screen/
/usr/share/perl5/UI/Dialog/Screen/Menu.pm
/usr/share/perl5/UI/Dialog/Screen/Menu.pod