When the "Displays translation prefix on translatable strings" property is selected under System Localization, the breadcrumbs for the HR Portal are not translated.
Steps to Reproduce
Activate the I18N: Internationalization plugin.
For more information, see the product documentation topic Activate a plugin.
Go to System Properties > System Localization.
Check Yes on Displays translation prefix on translatable strings.
Navigate to the HR Service Portal (HRSP).
Select Profile from the login display (top right corner of HRSP).
Scroll down and select Add new contact under My Contacts.
Create a new contact and click Save.
Note that there is no translation prefix for the User Profile and HR Contact breadcrumbs of the HRSP.
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Related Problem: PRB828597