Wrong order when using Tab navigation (and possible fix)

[gebalassa]

Something with using the custom GetScreenCoordinates() function in CompareTo() messes with Tab navigation due to bad sort().

I replaced the original CompareTo() function with:

// Get screen space coordinates for both WebGLInput objects, then prioritize by Y-coord, then by X-coord.
public int CompareTo(WebGLInput other)
{
    var a = Camera.main.WorldToScreenPoint(input.RectTransform().position);
    var b = Camera.main.WorldToScreenPoint(other.input.RectTransform().position);
    var res = b.y.CompareTo(a.y);
    if (res == 0) res = a.x.CompareTo(b.x);
    return res;
}

Not sure if this messes something else up, but my Tab navigation is working perfectly now.