Soft object reference variables have their default value greyed out

When creating Soft Object Variables of Actor or Character blueprints, the default value of the variable is greyed out and unable to be changed. I was able to create a Soft Object Reference of the Third Person Anim BP and the default value was not greyed out. 

Tested in //UE4/Release-4.25 @ CL 14469661 and this did not occur, so marking as a Regression

1. Create a Third Person Template Project
2. Right-click in the content browser
3. Create a new Blueprint Class with Actor as the Parent Class
4. Open the Blueprint
5. Add a new variable
6. Set the Variable's type to Third Person Character > Soft Object Reference
7. Compile the Blueprint
8. Look at the details panel of the Soft Object variable

RESULT:

The default value is greyed out and cannot be changed

EXPECTED:

The default value can be changed in the details panel

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