See the release notes for 11.2.1: it is fixed.
Xcode 11.2.1 GM seed
Xcode 11.2.1 includes everything you need to create amazing apps for all Apple platforms. Includes the latest SDKs for macOS, iOS, watchOS, and tvOS.
This update fixes a critical issue that could cause apps using UITextView to crash when run on previous versions of iOS, iPadOS, or tvOS. Please see the release notes.