On the Execution details page, Some of Test steps under iterations appear duplicated

Description: On the Execution details page, Some of the Test steps under iterations duplicate themselves when profile language changes to German. Sometimes, it happens after changing the language from German to English and then back to German.
[ Update: Is not necessary to have the UI in German to have this problem.]

Pre-conditions: NA

How to reproduce

1. Create a Test case and add a few Test steps and Data set iterations.
2.  Add a Test Execution and execute it. 
3. Change profile language to German.
4.  Check the Test steps on the Execution details page.
5. Repeat steps 3 and 4 two or three times if it does not happen in one go.  

Actual result/Attachments

Expected result: The test Step should not be duplicated.

Version

• 6.3, 7.0.1