/usr/share/planner/glade/ is in planner-data 0.14.6-4.
This file is owned by root:root, with mode 0o755.
..
/usr/share/planner/glade/add-predecessor.glade
/usr/share/planner/glade/calendar-dialog.glade
/usr/share/planner/glade/column-dialog.glade
/usr/share/planner/glade/eds.glade
/usr/share/planner/glade/group-dialog.glade
/usr/share/planner/glade/new-property.glade
/usr/share/planner/glade/project-properties.glade
/usr/share/planner/glade/property-dialog.glade
/usr/share/planner/glade/resource-dialog.glade
/usr/share/planner/glade/resource-input-dialog.glade
/usr/share/planner/glade/sql.glade
/usr/share/planner/glade/task-date-widget.glade
/usr/share/planner/glade/task-dialog.glade
/usr/share/planner/glade/task-input-dialog.glade