OLT App does not remove flows when a UNI port is disabled

karaf@root > ports                                                                                                                                                                                      22:57:15
id=of:00000a0a0a0a0a00, available=true, local-status=connected 1m30s ago, role=MASTER, type=SWITCH, mfr=VOLTHA Project, hw=open_pon, sw=open_pon, serial=BBSIM_OLT_0, chassis=a0a0a0a0a00, driver=voltha, channelId=192.168.144.1:60214, managementAddress=192.168.144.1, protocol=OF_13
  port=16, state=disabled, type=fiber, speed=0 , adminState=disabled, portMac=08:00:00:00:00:10, portName=BBSM00000001-1
  port=17, state=disabled, type=fiber, speed=0 , adminState=enabled, portMac=08:00:00:00:00:11, portName=BBSM00000001-2
  port=18, state=disabled, type=fiber, speed=0 , adminState=enabled, portMac=08:00:00:00:00:12, portName=BBSM00000001-3
  port=19, state=disabled, type=fiber, speed=0 , adminState=enabled, portMac=08:00:00:00:00:13, portName=BBSM00000001-4
  port=1048576, state=enabled, type=fiber, speed=0 , adminState=enabled, portMac=0a:0a:0a:0a:0a:00, portName=nni-1048576
karaf@root > flows -s                                                                                                                                                                                   22:57:24
deviceId=of:00000a0a0a0a0a00, flowRuleCount=2
    ADDED, bytes=0, packets=0, table=0, priority=10000, selector=[IN_PORT:16, ETH_TYPE:eapol, VLAN_VID:4091], treatment=[immediate=[OUTPUT:CONTROLLER], meter=METER:1, metadata=METADATA:ffb004000000000/0]
    ADDED, bytes=0, packets=0, table=0, priority=10000, selector=[IN_PORT:1048576, ETH_TYPE:lldp], treatment=[immediate=[OUTPUT:CONTROLLER]]

 $ voltctl device list ID TYPE ROOT PARENTID SERIALNUMBER VLAN ADMINSTATE OPERSTATUS CONNECTSTATUS 6e5b254377cc2b006aef1c78 openolt true 0a0a0a0a0a00 BBSIM_OLT_0 0 ENABLED ACTIVE REACHABLE a7c10eac4ee5402e5fc4d514 brcm_openomci_onu false 6e5b254377cc2b006aef1c78 BBSM00000001 0 ENABLED DISCOVERED UNREACHABLE 

$ voltctl device flows a7c10eac4ee5402e5fc4d514 ID TABLEID PRIORITY COOKIE INPORT ETHTYPE TUNNELID UNSUPPORTEDINSTRUCTION SETVLANID PUSHVLANID OUTPUT 2951f26bbdd21f95 0 10000 ~5225ac92 16 0x888e 16 6,2 4091 0x8100 536870912

root@978e0d58d3ad:/app# bbsimctl onu list
PONPORTID    ID    PORTNO    SERIALNUMBER    HWADDRESS            STAG    CTAG    OPERSTATE    INTERNALSTATE
0            1     16        BBSM00000001    2e:60:70:13:00:01    900     900     down         disabled
root@978e0d58d3ad:/app# bbsimctl onu flows BBSM00000001
ONU Flows:
+----------------+--------+--------+---------+-----------+----------+----------+-----------------+------------+--------------------------------+---------------------------+----------+-------------------+---------+
| ACCESS INTF ID | ONU ID | UNI ID | FLOW ID | FLOW TYPE | ETH TYPE | ALLOC ID | NETWORK INTF ID | GEMPORT ID |           CLASSIFIER           |          ACTION           | PRIORITY |      COOKIE       | PORT NO |
+----------------+--------+--------+---------+-----------+----------+----------+-----------------+------------+--------------------------------+---------------------------+----------+-------------------+---------+
|              0 |      1 |      0 |       2 | upstream  | 888e     |     1024 |               0 |       1024 | o_vid:4091 o_pbits:255         | cmd:<trap_to_host:true >  |    10000 | 53480246953225362 |      16 |
|                |        |        |         |           |          |          |                 |            | eth_type:34958                 |                           |          |                   |         |
|                |        |        |         |           |          |          |                 |            | pkt_tag_type:"single_tag"      |                           |          |                   |         |
+----------------+--------+--------+---------+-----------+----------+----------+-----------------+------------+--------------------------------+---------------------------+----------+-------------------+---------+