Icon "..rendering error.." issue

Hello. I’m trying to add icons to my app for the Developer mode testing. I’ve included both 80x80 and 130x130 px icons in PNG. My appinfo.json contains the following strings:

"icon": "icon.png",
"largeIcon": "icon-large.png",

After loading the app to a TV the icon is not displayed on a home screen. Instead it shows black box with “..rendering error..” message on it. What could have caused this problem, and how can I solve it?

Please check again with Hosted Web App sample app. Thank you.