Image doesn't display on iOS

[rdlauer]

Just upgraded to v5 of ui-image on iOS from v4 and images are non consistently visible (Android works fine). I'm struggling to figure out why it works sometimes and not others. For example:

            <!-- <img:Img row="0" col="0" colSpan="3" width="100%" height="250" src="{{ checkin_image }}" stretch="aspectFill" class="vert-align-top" fadeDuration="300" /> -->
            <Image row="0" col="0" colSpan="3" width="100%" height="250" src="{{ checkin_image }}" stretch="aspectFill" class="vert-align-top" fadeDuration="300" />

If I literally just revert to standard Image the above works fine. Using ui-image just doesn't load the image. In this case checkin_image is a valid URL that I logged and tested separately.

Any ideas?