Delete VLAN, ELAN instance ,ELAN port does not delete Table 52 ,Table 55 and groups

Delete VLAN interface Table 0 entries gets deleted
Delete ELAN instance and ELAN port

Table 52/55 and groups remains

Table 52/55 should get deleted .

Groups not getting deleted though group deletion is sent and bad group id error being thrown . Need to check if it is due to OVS issue

mininet> sh ovs-ofctl -O OpenFlow13 dump-flows s1
OFPST_FLOW reply (OF1.3) (xid=0x2):
cookie=0x6800000, duration=498.457s, table=16, n_packets=76, n_bytes=7416, priority=0 actions=goto_table:17
cookie=0x1030000, duration=498.457s, table=20, n_packets=0, n_bytes=0, priority=0 actions=goto_table:80
cookie=0x8000003, duration=498.457s, table=21, n_packets=0, n_bytes=0, priority=0 actions=goto_table:80
cookie=0x9001388, duration=388.575s, table=36, n_packets=0, n_bytes=0, priority=5,tun_id=0x1388 actions=write_actions(group:210000)
cookie=0x900000a, duration=359.653s, table=36, n_packets=0, n_bytes=0, priority=5,tun_id=0xa actions=push_vlan:0x8100,set_field:6096->vlan_vid,output:2
cookie=0x8050000, duration=498.457s, table=50, n_packets=4, n_bytes=296, priority=0 actions=CONTROLLER:65535,goto_table:51
cookie=0x8031388, duration=359.650s, table=51, n_packets=36, n_bytes=3560, priority=20,metadata=0x1388000000/0xffff000000,dl_dst=5a:c2:50:35:53:fc actions=push_vlan:0x8100,set_field:6096->vlan_vid,output:2
cookie=0x8030000, duration=498.457s, table=51, n_packets=4, n_bytes=296, priority=0 actions=goto_table:52
cookie=0x8701388, duration=388.571s, table=52, n_packets=4, n_bytes=296, priority=5,metadata=0x1388000000/0xffff000000 actions=write_actions(group:210000)
cookie=0x880000a, duration=388.553s, table=55, n_packets=2, n_bytes=148, priority=10,tun_id=0xa,metadata=0xa0000000000/0x1fffff0000000000 actions=drop
cookie=0x880000a, duration=388.564s, table=55, n_packets=2, n_bytes=148, priority=9,tun_id=0xa actions=push_vlan:0x8100,set_field:6096->vlan_vid,output:2
mininet>

mininet> sh ovs-ofctl -O OpenFlow13 dump-groups s1
OFPST_GROUP_DESC reply (OF1.3) (xid=0x2):
group_id=209999,type=all,bucket=actions=set_field:0xc->tun_id,resubmit(,55),bucket=actions=set_field:0xa->tun_id,resubmit(,55)
group_id=210000,type=all,bucket=actions=set_field:0xc->tun_id,resubmit(,55),bucket=actions=set_field:0xa->tun_id,resubmit(,55)
mininet>