Problem on call receiving

[Moosa]

Hi
When I receive any call  can not  open any other app or page
And can not reject will sms sending . Only can accept or reject call

[Moosa]

Calling screen won't let me to go back to any other app while the phone is ringing

[Giorgio80]

Same here .. While using the same app, sometimes incoming call window is full screen, sometimes shows as a notification.. It's very annoying 

[Moosa]

I can not open notification panel when calling or receive a call

[Moosa]

Please answer me