Variable in Blueprint with subcategory appear in detail panel of selected default component

When a blueprint variable is given a category and subcategory then compiled, the variable will show up in the details panel when selecting components that existed when the blueprint was created.

1. Open UE4 Editor (Any project)
2. Create blueprint based on Character
3. Add new variable (NewVar) with category and subcategory (NewCategory|SubCategory)
4. Compile Blueprint
5. Select CharacterMovement component

Result:
NewCategory->SubCategory->NewVar appear in the details panel of the component.

Expected:
Variables are independent of components

UProperty categories containing subcategories will always appear in the details panel when selecting a component