Can not Сast child PlayerState from parent object

There is a child class from APlayerState. It is necessary through Cast to initialize its object from the value of the object of the parent class. So, in the project under the version of the engine 4.15 it works, but under version 4.18 - does not.
What could be the problem?
The screenshot of the debugger window shows that I even tried to initialize a local variable (making it static, because the debugger does not want to show the values of local non-static objects) and the result is the same - NULL.

There is complete certainty that the object I’m trying to initialize is exactly the heir from APlayerState. This is the problem with which I’m trying to figure out why I can not access the object of the parent class via Cast ()?

Have you tried to cast NewController->PlayerState instead of PlayerState?