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original title: apple ios 18 exposed a new bug: causing both parties' messages applications to crash in a loop, and the existing fix will lose data

it home reported on september 19 that technology media 9to5mac published a blog post yesterday (september 18), reporting that there is a bug in the messages app in apple's ios 18 system.this will cause the application to crash, and the current repair method will result in data loss.

how to avoid message crash bug on ios 18

reader alex first discovered the vulnerability, and the media subsequently successfully reproduced the vulnerability.

the steps to reproduce the problem are relatively simple. after someone shares a watch face with you from apple watch, do not reply to the message in threaded mode.

bug situation

apple watch includes a feature that allows users to easily share watch faces directly through watchos in messages or mail. this feature is designed to share personalized watch face configurations.

if users reply to messages directly in the conversation interface, the bug will be triggered, causing the message app to crash repeatedly.

it home quoted media reports that the bug affects users of both parties. sharing a watch face with ios 18 users will trigger the bug, ​​while sending a shared watch face with ios 18.1 will not trigger the bug.

in addition, on the receiving side, including ios 18.1 beta, ipados 18.1 beta, and macos 15.1 beta, when users reply to a shared watch face in conversation mode, the messages app will crash.

repair requires clearing chat history

once ios 18 users encounter this problem, both parties cannot open the conversation in the messages app. the current solution is to delete the conversation history. however, since the messages app is in a loop crash state, this operation process is also difficult.

this solution results in all conversation history being deleted, including attachments such as photos and videos that were not saved outside the messages app.

restoring a deleted conversation thread from the "recently deleted" location in the messages app reintroduces the crash bug. apple may need to fix this bug in beta updates for ios 18, macos 15, watchos 11, and future apple pre-release software.