ngc join and broken group

--start--
[0]:remove old savefiles
[1]:ID:1: BED3FD1457FFF6CB7B732965878725F26F9094C45730E6F4FAF9167859B1463F070C886D246E
[2]:ID:2: E0A6D8740AEC95E2F25AC085972225113EA759BF58C9CA651BD0AD788EB6863277E085299E61
[1]:tox num_friends:0
[1]:tox num_groups:0
[2]:tox num_friends:0
[2]:tox num_groups:0
[1]:bootstrapping ...
[1]:bootstrapping done.
[2]:bootstrapping ...
[2]:bootstrapping done.
[1]:add friend res=0
[1]:Connected using TCP.
[2]:Connected using TCP.
[2]:accepting friend request. res=0
[1]:Connected to friend 0 using TCP
[2]:Connected to friend 0 using TCP
[0]:friends online
[1]:created 1st group res=0
[1]:created 2nd group res=0
[1]:invited friend to 1st group res=0
[1]:invited friend to 2nd group res=0
[2]:tox_group_invite_accept:0
C-TOXCORE:2:3:group_chats.c:5497:send_gc_handshake_packet:UDP handshake failed and no TCP relays to fall back on
[2]:tox_group_invite_accept:0
C-TOXCORE:2:3:group_chats.c:5497:send_gc_handshake_packet:UDP handshake failed and no TCP relays to fall back on
[2]:You joined group 0 self=1
[2]:You joined group 1 self=2
[1]:Peer 1 joined group 0 other=1
[1]:Peer 1 joined group 1 other=2
[2]:Peer 1 joined group 0 other=1
[0]:friends joined group
[0]:save data
[0]:kill tox
[0]:wait some time before starting again ...
[0]:wait some time before starting again, done


[0] ====================================
[0] ====================================


[0]:start tox again
[1]:tox num_friends:1
[1]:tox num_groups:2
[2]:tox num_friends:1
[2]:tox num_groups:2
[0]:connect
[1]:bootstrapping ...
[1]:bootstrapping done.
[2]:bootstrapping ...
[2]:bootstrapping done.
[0]:set callbacks
[2]:You joined group 0 self=1
[1]:You joined group 0 self=1
[1]:Peer 1 joined group 0 other=1
[2]:Peer 1 joined group 0 other=1
[1]:Connected using TCP.
[2]:Connected using TCP.
[1]:Connected to friend 0 using TCP
[2]:Connected to friend 0 using TCP