All type List gadgets and reports return "Unexpected error has occurred. e.startsWith is not a function" when the Sprint column is configured to be displayed and contains a value

Short Description: All type List gadgets and reports return "Unexpected error has occurred. e.startsWith is not a function" when the Sprint column is configured to be displayed and contains a value.

Steps to Reproduce:

1 - Make sure you have a test execution issue with the sprint value filled (eg. XPTO Sprint 2).

2 - Configure the gadget with the project of the Test execution and put the column "Sprint" to be displayed.

Actual Results: An error is displayed.

Expected Results: No error should be displayed.