Cannot Create Data Asset Derived from Blueprint/C++ Classes

When creating a new data asset, it is not possible to select a Data Asset C++ Class or Derived Blueprint as its base class.

This did not occur in 4.15.1, this is a regression.

1. Open the editor
2. Create a new C++ class based on Data Asset
3. Add the Blueprintable specifier to the UCLASS()
4. Compile
5. Create a blueprint derived from the Data Asset C++ Class
6. Create a new Data Asset (Miscellaneous->DataAsset)

Result: Notice that the C++ class and the blueprint class are not available in the dropdown of classes to derive from.

Expected: The classes created in the repro steps would be available to derive from.