Warning in the Output Log when Switching a Local Variable from Struct to Enum

Warning in the output log when switching a local variable from struct to Enum

1. Open editor
2. Create a structure and name it "Struct S"
3. Create an Enum and name it "Enum E" with 2 entries
4. Create a function inside a blueprint with a local variable of type Struct S
5. Compile the blueprint
6. Change the local variable type from Struct S to Enum E
7. Compile -> the warning will show up in the output log
8. Change the default value of the local variable to the 2nd entry of the enum
9. Compile -> no warning anymore
10. Change the default value of the local variable back to the 1st entry
11. Compile -> no warning