For languages other than English, the popup list of categories (sc_category) that is displayed on clicking the reference lookup (magnifying glass) icon for the Principal (parent) field on a non-English form shows the value from the Catalog column in the Title column.
Steps to Reproduce
Log in to the instance as maint.
Activate a language plugin, for example, I18N: Spanish Translations.
For more information, see the documentation topic Activate a plugin.
Click the gear icon in the banner frame and set Language to Spanish.
Navigate to Caltalogo de servicios > Definiciones del Catalogo > Mantener Categorial (the Maintain Categories module).
Click the Nuevo (New) button.
Click the reference lookup (magnifying glass) icon next to the Principal (Parent) field.
Note that the Titulo (Title) column value is replaced by the Catalogo (Catalog) value.
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Related Problem: PRB733783