[Geschlossen] QueryLoop in Spanish not displaying subpages under parent page

Source language English has a QueryLoop that displays subpages filtered by a selected parent page. The parent page and all subpages have been translated to Spanish, however, the QueryLoop does not display the subpages in Spanish. I have not made any edits to the QueryLoop in the translated Page.
Example posts showing this issue:
English post correctly shows subpages in the sidebar under "LEARNING LIBRARY": versteckter Link
Translated Spanish post does NOT show subpages in sidebar under "CENTRO DE APRENDIZAJE": versteckter Link

The setting "Set page parent for translation according to page parent of the original language" is checked.

See attachements.