transmission-gtk crashed with SIGSEGV in evdns_cancel_request()

occuered when I quitted from tray icon.

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: transmission-gtk 2.84-3ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-17.33-generic 4.4.6
Uname: Linux 4.4.0-17-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu1
Architecture: amd64
CrashCounter: 1
CurrentDesktop: Unity
Date: Thu Apr 7 17:32:08 2016
ExecutablePath: /usr/bin/transmission-gtk
InstallationDate: Installed on 2016-03-11 (26 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160307)
ProcCmdline: transmission-gtk
SegvAnalysis:
 Segfault happened at: 0x7f7609748f08 <evdns_cancel_request+88>: cmp %rbp,(%rax)
 PC (0x7f7609748f08) ok
 source "%rbp" ok
 destination "(%rax)" (0x00000040) not located in a known VMA region (needed writable region)!
 Stack memory exhausted (SP below stack segment)
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: transmission
StacktraceTop:
 evdns_cancel_request () from /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
 evdns_getaddrinfo_cancel () from /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
 ?? ()
 tr_ptrArrayDestruct ()
 tr_tracker_udp_close ()
Title: transmission-gtk crashed with SIGSEGV in evdns_cancel_request()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip input kvm libvirtd lpadmin plugdev sambashare sudo