The following code will crash any Linux system that has proper unicode support:

import QtQuick 2.15
import QtQuick.Window 2.15
Window {
    width: 640
    height: 480
    visible: true
    Text {
        id: patLabel
        text: "🏒Mom"
        style: Text.Outline
    }
}
 

The problem is the combination of style: Text.Outline with the text being unicode. If unicode support is broken (because sometimes there are fonts that don't support unicode properly), the app doesn't crash but it also doesn't show the unicode.