Push Notification with Big Image Does not automatically apply to Samsung Galaxy 7 Edge (Android)

I want to know why Push Notification with large image on Samsung Galaxy 7 Edge is not auto-expanding? We have to click, then it expands. We want Auto Expand to support Push Push notifications. I want to know if this is something with the Samsung Galaxy 7 Edge problem or programmatically, is there something missing? but keep in mind that this app is already showing an enhanced push notification with an image on all other devices.

Any guidance would be helpful.

Thank.