Set node for a key variable returns "(" instead of "None" when set to none (if not previously set to anything)

When setting a key variable to none (without setting it to anything else first) the variable will return "(" instead of none

1. Open the editor
2. Open the level blueprint
3. Create a new Key variable
4. Create the blueprint in the attached image (Make sure not to change the key setting )
5. Play in Editor

Result: The Print string returns "(" instead of "None"
Expected: The print string would return "None"