Issues when importing .png's with transparency into Adobe Aero

Hi Adobe Aero Community, 

I am getting issues and strange artifacts when importing .png images with transparency into Adobe Aero (Windows - Desktop). 

Here is a .png file of an arrow that I added into the application. As you can see there is a small white line that appears at the edge of the image. For some reason this issue is consistent with all images that I drag into the software.

Is there something wrong with the image format I am importing? Or is there another issue I should be looking out for? 

Thanks, 

-Ross