Hey, thanks for this - really helped me troubleshoot a similar issue in UE5.
I’d tried deleting the spaces as you suggest but that initially did nothing. However, I’d included punctuation (a colon : ) at the end of the column names which was fine in PIE but not in a packaged build. Removing them now meant that the string array was returning correctly.
Was a silly error that I should’ve realized, posting incase anyone else gets thrown by something similar too 