It appears that all of a sudden when attempting to add a bitmoji or attachment to a text after hitting attach, the app has the send button immediately in place rather than allowing a person to review or add an additional message rather the message is sent already. It didnt do that before.
Yes, that's the way it's working on the latest iteration, 6.4.4. For now, I guess make sure the message is the way you want it before attaching a photo. Or send more than one message; neither solution is ideal though, and it needs to be fixed.