New UPROPERTY variables cannot be added to the Actor Tick category

Adding the category "Actor Tick" to a UPROPERTY variable adds the variable to a new blueprint category rather than the existing Actor Tick category.

1. Open UE4Editor (any project)
2. Add code to project based on Actor (MyActor)
3. Add the following to MyActor.h

   UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Actor Tick")
   	bool Choice;
   

4. Compile
5. Create and open blueprint based on MyActor

Result:
Two separate Actor Tick categories are shown in the details panel

Expected:
New variable is added to the existing category rather than creating a new one.