Sprint reset on Image not working in latest release (including beta)

Hi,
I have Image component on which I dynamically change the sprite (2D and UI) by using:

Code (CSharp):

1.  
2.         void UpdateImage(Image image, bool isSelected, Sprite selected, Sprite plain)
3.         {
4.             if (image == null)
5.                 return;
6.  
7.            image.sprite = isSelected ? selected : plain;
8.         }

The code works perfect on 2018.3.12f1 but not working on the latest 2019 (including beta) => i.e. the image background is drawn correct but the white part is not). Downgrading to 2018.3.12f1, removes the issue.
(see image here = https://drive.google.com/open?id=1PPy0QJHho2EF6w2VmpnRlW8suHinePUh )

Any ideas why this happens?
Thanks!

 

Fixed in latest 2019 release.