Found a icon scaling bug with the Roku Button component
https://developer.roku.com/en-gb/docs/references/scenegraph/widget-nodes/button.md
On HD UI mode (720) the icon is scaled down to a small size. On FHD UI mode (1080) the icon is scaled are the intended size.
Demo here of the issue:
https://youtu.be/NF5oVXpWc3I
Here's how the Button with custom icons should look in HD with a workaround:
https://youtu.be/VxBc0vTch3o
Charlie
This sounds like a post related to a channel you have developed or are developing.
You've posted to a forum for Roku users, where few, if any, will be able to help. The Developers forums are a couple of doors down the hall: https://community.roku.com/t5/Developers/ct-p/channel-developers