Linux client and listen server hangs on GameThread when decoding voice chat

The ShooterGame client on Linux stops responding when the Windows host presses the Push to Talk hotkey and speaks into the mic to activate VOIP.

[2016.09.16-19.09.24:159][575]LogCore:Error: Hang detected on GameThread (thread hasn't sent a heartbeat for -nan seconds):
[2016.09.16-19.09.24:159][575]LogCore:Error: Hang detected on GameThread:

1. Open UE4Editor.exe ShooterGame -game -log
2. Open ./UE4Editor Shootergame -game -log
3. Host a Free For All match on the Windows machine
4. Join the windows match from the Linux machine
5. Hold V and speak into the mic on the Windows machine

RESULT:
The Linux client stops responding when decoding voice chat.

Exception was "Hang detected on GameThread:"

<CALLSTACK START>
Unknown!FLinuxPlatformStackWalk::CaptureStackBackTrace(unsigned long long*, unsigned int, void*) + some bytes
Unknown!FGenericPlatformStackWalk::StackWalkAndDump(char*, unsigned long, int, void*) + some bytes
Unknown!FLinuxCrashContext::CaptureStackTrace() + some bytes
Unknown!NewReportEnsure(wchar_t const*) + some bytes
Unknown!FThreadHeartBeat::Run() + some bytes
Unknown!FRunnableThreadPThread::Run() + some bytes
Unknown!FRunnableThreadPThread::_ThreadProc(void*) + some bytes
Unknown!/lib/x86_64-linux-gnu/libpthread.so.0(+0x76fa) [0x7fe6408e46fa] + some bytes
Unknown!/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d) [0x7fe63fa9bb5d] + some bytes