Announcement Banner on Customer portal after translated will remain even after removing the content from Announcement Banner

Issue Summary

Announcement Banner on Customer portal after translated will remain even after removing the content from Announcement Banner

Steps to Reproduce

1. Create a Service Desk Project
2. Navigate to Project Settings --> Portal Settings --> Add a String Announcement Banner: "Welcome to IT Service Center"
3. Navigate to Project Settings --> Language Support --> Add a language (Eg. Deutsch (Deutschland))
4. On translation page, set the translation for Announcement Banner: "Willkommen im IT Service Center"
5. Login as customer with Profile language set to Deutsch (Deutschland). Customer will see the Announcement Banner: "Willkommen im IT Service Center"
6. As admin, Navigate to Project Settings --> Portal Settings --> and remove the Announcement Banner String.

Expected Results

The content on Announcement Banner should also be removed

Actual Results

The User with language Deutsch (Deutschland) will see the same content in the Announcement Banner as "Willkommen im IT Service Center"

Workaround

Before removing the content in Announcement Banner from Navigate to Project Settings --> Portal Settings --> "View and change your Customer Portal announcement". Remove the translated entry from
Navigate to Project Settings --> Language Support --> Click on the selected Language --> Translation page --> Announcement Banner