Hi, Thank you for your reply. It is important work within the exact same environment. I am currently using Xcode 26.2 with the iOS 26.0 simulator iPhone 17 or iPhone17 pro (should happen of any of them), and I was able to reproduce the issue on other MacBooks as well with same environment. During our investigation of crash reports, we found that this issue occurs in production on certain iOS versions. Reproducing it locally in the simulator has been the only reliable way to validate the behavior. I would greatly appreciate your assistance with this matter. The problem does not appear to be related to UIKit. I can reproduce it in SwiftUI using Text as well. Unfortunately, the stack trace is not very informative. The crash also occurs when simply passing this specific character to Safari within the simulator. In most cases, the crash can be reproduced by adding the character to a project and building it with the iOS 26.0 simulator using iPhone 17. When running the same project on iOS 26.0.1, the issue no longer occurs. Here is the link to the repository: https://github.com/CClislar/coretext-crash Please let me know if you need any additional information.