Not sure if already reported.

When typing two special characters after each other the message autmatically gets sended. For example: > ^ © %.
It will only send one of the special characters leaving the second one in the text box.

Also, I was chatting with someone and his name suddenly changed to Willem. Hes named Wouter in my adressbook. I thought you could not specify a name in Whatsapp?

Edit: Nvm. I see you can specify a name in Whatsapp.