Bug ARFoundation 4.x Startup problem and Memory

ARF4.x:
If you don’t check the box, the AR algorithm cannot be started on the device even though AR-Session components are instantiated. However, in version 3.1.3, it is allowed to start the AR algorithm without checking the instantiated AR-Session component.

Memory:
I'm using the UAAL with iOS, The memory no change, always 500M when I call the

Application.Unload()

and

Destroy all AR components

.

 

Memory leaks!