I don't think there's an easy way to get a screenshot from an iFly device. You could always take a photo of it, though. Not so critical now, though; I was going to use the photo to figure out what software and type of device you were using, and you've told me that now.
The good news is, I found my old 720. The bad news is, I didn't find the wall wart to power it, so I can't try to duplicate your results on that device.
I did try to build a similar flight plan on my Android tablet, and it seemed to behave as expected, so that's not so helpful in reproducing your issue: