You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
Cloud SessionsArea: what it touches
ImprovementsKind: in v2.1.293,
ImprovementsSection of the release
What
When a message you send to a cloud session (a Claude Code conversation running on a remote machine rather than your own) cannot be sent, Claude Code now picks between two messages:
If the message may still have reached the session, it says so and tells you to resend it if Claude doesn't respond.
Otherwise, it says the message couldn't be sent.
Why
A failed send does not always mean the message was lost. Saying which case you are in helps you decide whether to wait or resend, instead of sending the same message twice.