iPhone 16 Pro Max running iOS 27.0 with Siri AI enabled.
I’m seeing a reproducible issue with Write with Siri inside Messages.
When I open an iMessage conversation, tap Write with Siri, and type text intended for the message recipient, Siri will sometimes interpret the text as though I’m speaking directly to Siri instead.
For example, if I type an affectionate goodnight message for my partner, Siri may respond with something like “That’s not a relationship I’m here for. I’m here to be your assistant” rather than adding the text to the message.
I’ve also tested more direct/intimate wording intended for my partner and Siri refused to respond, again acting as though the message was aimed at Siri rather than the person whose Messages thread I was actually in.
The same workflow sometimes works correctly and Siri says “I’ve added that to your message”, so the behaviour is inconsistent.
I have tried restarting the iPhone, force-closing and reopening Messages, and testing in fresh conversations. The issue still occurs.
Normal Siri AI conversations work correctly. The problem appears limited to Write with Siri inside Messages, where Siri sometimes loses the context that the text is intended for the recipient and treats it as a direct prompt to Siri.
Has anyone else experienced this?