T[] cast to IList<BaseT> throw exception

My unity version: 4.6.7p3. Example as follows:

Base class:

Code (CSharp):

1. public class PlayerBase { }

Inherited class:

Code (CSharp):

1. public class PlayerDB : PlayerBase { }

Test code:

Code (CSharp):

1. void Start()
2. {
3.     var array = new PlayerDB[0];
4.     Debug.Log(array is IList<PlayerBase>);
5. }

Result:
Editor -> true
Android -> true
IOS -> false

And test on version 4.6.2, result:
Editor -> true
Android -> true
IOS -> true

Could you fix this issue high priority? Thanks.

 

Report Case 717904.

 

Thanks a lot.