SteemApp v2.1.1 can be log in with wrong username.

[ashiqurakash]

How to reproduce:

• Fresh start SteemApp v2.1.1 and click on the first box and write any steemit username you want example "steemapp".
• Go to your steemit wallet and then click on permission and click on "show private key" of posting.
• Copy the private posting key and paste it on SteemApp posting key box or just scan the QR code by clicking on the camera icon of SteemApp.
• After pasting private posting key click log in.
• Note that after clicking on log in user still able to log in with that wrong username.

platform Android 7.0 Recorded video : https://vimeo.com/282578836