We are having a problem with iOS 11. Our academic OTF font has glyphs in the PUA E000-E0FF and the PUA-A F000-F01FF. The font previously worked well on iPhone & iPad iOS 10 and earlier, but now glyphs in PUA range are now intermixed with Emojis in the iPhone Mail app. Is anyone else experiencing similar problems? Font continues to work properly in MS Windows.
The latest version of iOS 11.3 is used. We distribute the font to iPhone/iPad using a mobileconfig file. Distribution and installation goes well as before. Installation to iOS 10 and earlier devices continue to work properly. Strangely, the font works on iOS 11 devices where previously installed and opsys upgraded to iOS 11; if font is deleted then reinstalled. the problem appears.
Somehow those damnable Emojis are somehow taking preference, but a few of our glyphs appear properly where the Apple font apparently does not have glyphs.
Any thoughts will be appreciated.