HP-15c app has a cosmetic problem on newer iPhones

[anyfoo]

Thanks. I seem to get the expected result, see screenshot (this is with pressing down PREFIX, so no decimal point, as expected on a 15c).

I'd actually even be a bit surprised if the HP app wasn't the original ROM running in a hardware emulator, as recreating the 15c otherwise could actually be more work (especially if the 15c's CPU is as simple as I think it is), but it's possible of course.