This problem recently occurred to me. When I tried to send an SMS in the SMS/Phone tab, As you can see, there's a lot of white space below the text box and because of the inappropriate sizing, the button to go back to the contacts menu normally in the upper left hand corner is gone. I have tried rebooting chrome, rebooting the computer and reinstalling the extension, and the problem persisted. This is on Windows 7 and the chrome version is 55.0.2883.87 m and the Join extension version is 1.0.52. Will you help me with this? Thanks!