There is not enough information here for me to understand what is happening. Can you explain how this warning is affecting your project? Is there a problem when trying to do localization for your game?
It’s not affecting my game but when I’m looking for warning and issue in my log, I have those so I open the case for you to fix this in the source code.
I was able to reproduce this issue on our end. I have written up a a report ( UE-18133) and I have submitted it to the developers for further consideration. I will provide updates with any pertinent information as it becomes available. Thank you for your information and time.
I went ahead and double checked on this issue for you and I found that it has been resolved internally. This solution will be available in a later release of the engine. Thank you for your time and information.