Everyone keeps saying that the new blockchain wallet doesn't have the signing feature.
In fact it DOES have it. It's right in there.
Yup!The new wallet did a signing feature until the most recent update.If you have been automatically pushed to the newest version you could see the options tab disappeared hence restricting the signing messages functionality.
Go to settings>>address>>manage addresses>>
and then next to the address which you want to a sign a message from press More options
Then sign message.
Next to the address,the "More Options" tab just doesn't exists hence if you are been notified of updating to the latest wallet ,refrain from doing it unless you are not keen on signing messages.