So within Unreal Engine, if you use an orthographic camera you have no shadows.
The fact you have shadows in your renders at all means that you aren’t using a really orthographic camera.
Assuming the topic was in regards to the fortnite bs thing, then you are right. The ortho camera is not Orthographic because Epic sucks and in some 20 years they never actually added the shadow rendering into the orthographic setup (and to provide you with shadows they are using a regular camera).