Cannot hear the other party after call transfer.

[Suoweiwuu]

Describe the bug
First, a call is initiated from the softphone through FreeSWITCH A to User A. After User A answers, FreeSWITCH A disconnects the softphone and transfers the call to FreeSWITCH B, which routes the call to User B. At this point, the call between User A and User B is successfully established. However, occasionally, after the transfer, User A and User B cannot hear each other. Packet capture reveals that after the transfer, FreeSWITCH A receives audio from FreeSWITCH B (i.e., User B's audio) as well as audio from User A, but FreeSWITCH A neither forwards User A's audio to FreeSWITCH B nor forwards FreeSWITCH B's audio to User A.hope someone can help me. thanks!

To Reproduce
can not reproduce

Package version or git hash
freesiwtch A:FreeSWITCH Version 1.6.2064bit ( 64bit)
freesiwtch B:FreeSWITCH Version 1.10.11-release.1864bit (-release.18 64bit)

Trace logs
search 18529132120, it conatins full log
error_fs (1).log

captured package

2dae34ed-394f-123e-7b8f-00163e162cfd.zip