Appium 1.3 not able to send_keys to password textfield in iOS app?

I am using OSX 10.10, Xcode 6.1, Appium 1.3.1. My app have a table view including a password text field for user to login in login page.
I used to work with using python to write the test case to login to my app when I was using OSX 10.9, Xcode 5.1.1, Appium 1.2.
But After I upgrade my system, I am no longer work to sendkey to the password text field. Anyone can help or encounter this issue?

This is a known issue

Is this still an issue? Any update?