TCP_NIO: failure starting correctly with bundling enabled

Stack is (default tcp-nio.xml with bundling enabled), the error is:
$ jg Draw -props ./tcp-nio.xml

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GMS: address is 127.0.0.1:7800
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• • View=[127.0.0.1:7800|0] [127.0.0.1:7800]
    0 [WARN] [TimeScheduler.Thread] TimeScheduler._run(): task org.jgroups.protocols.TP$Bundler$BundlingTimer@1c65216 took 20921ms to execute, please check why it is taking so long. It is delaying other tasks

<config>
<TCP_NIO
recv_buf_size="20000000"
send_buf_size="640000"
loopback="false"
discard_incompatible_packets="true"
max_bundle_size="64000"
max_bundle_timeout="30"
use_incoming_packet_handler="true"
use_outgoing_packet_handler="false"
down_thread="false" up_thread="false"
enable_bundling="true"
start_port="7800"
use_send_queues="false"
sock_conn_timeout="300" skip_suspected_members="true"
reader_threads="8"
writer_threads="8"
processor_threads="8"
processor_minThreads="8"
processor_maxThreads="8"
processor_queueSize="100"
processor_keepAliveTime="-1"/>
<TCPPING timeout="3000"
down_thread="false" up_thread="false"
initial_hosts="${jgroups.tcpping.initial_hosts:localhost[7800],localhost[7801]}"
port_range="1"
num_initial_members="3"/>
<MERGE2 max_interval="100000"
down_thread="false" up_thread="false" min_interval="20000"/>
<FD_SOCK down_thread="false" up_thread="false"/>
<FD timeout="10000" max_tries="5" down_thread="false" up_thread="false" shun="true"/>
<VERIFY_SUSPECT timeout="1500" down_thread="false" up_thread="false"/>
<pbcast.NAKACK max_xmit_size="60000"
use_mcast_xmit="false" gc_lag="0"
retransmit_timeout="300,600,1200,2400,4800"
down_thread="false" up_thread="false"
discard_delivered_msgs="true"/>
<pbcast.STABLE stability_delay="1000" desired_avg_gossip="50000"
down_thread="false" up_thread="false"
max_bytes="400000"/>
<pbcast.GMS print_local_addr="true" join_timeout="3000"
down_thread="false" up_thread="false"
join_retry_timeout="2000" shun="true"
view_bundling="true"/>
<FC max_credits="2000000" down_thread="false" up_thread="false"
min_threshold="0.10"/>
<FRAG2 frag_size="60000" down_thread="false" up_thread="false"/>
<pbcast.STREAMING_STATE_TRANSFER down_thread="false" up_thread="false"
use_flush="true" use_reading_thread="true"/>
<!-- pbcast.STATE_TRANSFER down_thread="false" up_thread="false" use_flush="false"/ -->
<pbcast.FLUSH down_thread="false" up_thread="false"/>
</config>