Unable to answer or reject call

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Enable pattern lock screen
2. Wait for device to sleep
3. Call phone

What is the expected output? What do you see instead?

The phone rings, but instead of being able to answer the call, I must first 
unlock the screen. Often I can't even complete my unlock pattern and I have to 
try again. Even when I successfully do my pattern, the device stay locked, 
ringing. By the time I can unlock the device, the caller reached voicemail.
I am not saying I get this bug all the time, but often enough to drive me crazy.

What version of the product are you using? On what device/operating system?
Version 3.6 beta, Android 5.1 on Nexus 5 D820

Which SIP server are you using? What happens with PBXes?
voip.ms. I didn't try PBXes.

Which type of network are you using?
Wifi

Please provide any additional information below.

Original issue reported on code.google.com by xavdouvi...@gmail.com on 15 Apr 2015 at 5:06

[GoogleCodeExporter]

This is driving me crazy, I can't answer most of my calls.

Original comment by xavdouvi...@gmail.com on 23 Apr 2015 at 3:14