am 6bd19a57: Merge "No InCall UI visible after hiding conference manager." into lmp-mr1-dev

* commit '6bd19a57611950ff85c0411b77ea5c051e7659a6':
  No InCall UI visible after hiding conference manager.
tree: 91d17b080526efe4ce0d03e95dacfec1c156cec5
  1. InCallUI/