Using Siri to Work Around iMessage Crash
Apple (via Dave Marra):
Apple is aware of an iMessage issue caused by a specific series of unicode characters and we will make a fix available in a software update. Until the update is available, you can use these steps to re-open the Messages app.
Update (2018-01-18): Chance Miller:
We tested the chaiOS bug and had mixed results. In some instances, sending the link would cause both the sender and recipient’s device to respiring or cause the Messages app to instantly freeze and crash. Furthermore, reentering the thread would cause the Messages app to crash again and again, making the only viable solution to regain access to that thread to delete it and start a new one.
Update (2018-01-19): See also: Hacker News.
