Get negative timeout counting down when new connection is accepted

[swordfeng]

printed by ucat:

debug: Allocatd 4096 buffer
debug: Bound to local 0.0.0.0:23333
debug: UTP context 0xab5c80
debug: Received 20 byte UDP packet from 127.0.0.1:45886
log: recv 127.0.0.1:45886 len:20 id:17767
log: recv id:17767 seq_nr:9158 ack_nr:0
log: Incoming connection from 127.0.0.1:45886
debug: Firewall allowing inbound connection
log: 0xab61d0 127.0.0.1:45886 017768 MTU [RESET] floor:576 ceiling:1402 current:0
log: 0xab61d0 127.0.0.1:45886 017768 UTP socket initialized
log: 0xab61d0 127.0.0.1:45886 017768 Got ST_SYN. seq_nr:9158 ack_nr:0 state:SYN_RECV timestamp:2970548573 reply_micro:0
log: recv send connect ACK
log: 0xab61d0 127.0.0.1:45886 017768 Sending ACK 9158 [17767]
log: 0xab61d0 127.0.0.1:45886 017768 send 127.0.0.1:45886 len:20 id:17767 timestamp:37330287042 reply_micro:0 flags:ST_STATE seq_nr:17767 ack_nr:9158
debug: sendto: 16 byte packet to 127.0.0.1:45886
debug: Accepted inbound socket 0xab61d0
log: 0xab61d0 127.0.0.1:45886 017768 CheckTimeouts timeout:-37330287 max_window:1382 cur_window:0 state:SYN_RECV cur_window_packets:0

Is that an expected behaviour? According to the source it seems that when timeout in CS_SYN_RECV state the connection should be closed.