Caller cannot close the window of a transferred call in Lync 2013

Consider the following scenario:

• You have four Microsoft Lync users (user A, user B, user C and user D). User A and user B are enabled for the remote call control feature (RCC).
• User A makes a call to user B from an IP telephone that uses Lync 2013 user interface.
• User B transfers the call to user C by using Lync 2013.
• User C accepts the call. Then, user A and user C are in a conversation.
• User C ends the call.

In this scenario, user A cannot close the call window. Additionally, the following message and the Resume Call button are displayed in the window.If user A tries to make a new call to user D, the call window between user A and user C will be in the background and the call to user D will fail.