> The recipient is not made aware of this change in encryption, while the sender is only notified if they have opted-in to encryption warnings in settings, and

> The recipient is not made aware of this change in encryption, while the sender is only notified if they have opted-in to encryption warnings in settings, and only after the messages have been re-sent. Surely this is backwards. It's the recipient who is notified about key changes when the relevant setting is enabled.