Summary: When iOS, MacOS, watchOS try to render Indian symbol 'జ్ఞ‌ా' all of it has crashed Steps to Reproduce: Try to insert 'జ్ఞ‌ా' this symbol in any system text renderer like TextField, Label, TextView it always has crashed. Expected Results: Don't crash and correct render it Actual Results: Crash Sample Code: https://drive.google.com/open?id=1vsc8tpIW05eAHP-W0n6pv_BCs6vj6iVl Try to open this playground in xCode, if you can't open it in some Electron-based text editor: Visual Code, Atom etc. Where it renders correctly​. UPDATE: Fixed in iOS 11.2.6, macOS High Sierra 10.13.3, watchOS 4.2.3 and tvOS 11.2.6