Does this happen in the latest 1.4.20 release

On Tuesday, July 14, 2015, Niraj Roy <techfaltu@gmail.com> wrote:
Hello Gurus,
    We are using FreeSWITCH Version 1.4.18~64bit. We observed when both caller and caller hangs up the call simultaneously exec_after_bridge_app function does not execute for one of the legs.
    Here is the segment of executing the xml file.
                <action application="set" data="exec_after_bridge_app=transfer"/>
                <action application="set" data="exec_after_bridge_arg=endcall-handler XML CALLENDING"/>
                <action application="set_zombie_exec"/>
                <action application="set" data="continue_on_fail=true"/>
                <action inline="true" application="set" data="hangup_after_bridge=false"/>

For normal or sequential call clearing everything works fine, but somehow this creates a race condition and state mismatch in the freeswitch which I don't know.
Can anybody shed some light on this?

Thanks,