the workaround about this is forcing link order, preceding libc++abi.dylib over libc++.dylib. Thanks, After adding the following settings to Other Linker Flags, the app no longer crashes on Xcode 16.4 with iOS versions earlier than 18.4 — at least for now: -Wl,-force_load,$(SDKROOT)/usr/lib/libc++abi.tbd -Wl,-weak_library,$(SDKROOT)/usr/lib/libc++.tbd -Wl,-weak_library,$(SDKROOT)/usr/lib/libc++.1.tbd I hope this issue will be properly addressed in the next Xcode update.

It also worked on iOS18.0

Based on my testing, it seems that the bug with .disabled() has been fixed on iOS 18.1 and 18.2. The build environment was Xcode 16.1 with Swift 5.10.