What cause UDP Multicast Stream Statistics to double count streams

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I have a multicast capture of "mpeg ts" packets. When I opend Statistics->UDP Multicast streams I notice duplication of streams in the table output instead of only unique streams. In fact known some unique streams i can see in the capture are not showing up there. E.g I see the same src IP, src prt and dst IP,dst prt pair duplicated. What is the cause of this and is there a fix. Wireshark versions tested: 2.6.2

Copy of table shown below

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UDP Multicast Streams - split.pcap:
Source Address  Source Port  Destination Address  Destination Port  Packets  Packets/s  Avg BW (bps)  Max BW (bps)  Max Burst  Burst Alarms  Max Buffers (B)  Buffer Alarms
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172.25.245.161         1041  228.1.161.17                     2001     2231  103.562677  1125104.920457  108640000.000000         10             0          2586637              2
172.25.245.159         1033  228.1.159.9                      2001     1163  53.987672  586522.068215  32592000.000000          3             0           792549              2
172.25.245.159         1036  228.1.159.12                     2001     2146  99.616971  1082238.776774  108640000.000000         10             0          2528386              2
172.25.245.159         1036  228.1.159.12                     2001     2146  99.616971  1082238.776774  108640000.000000         10             0          2528386              2
172.25.245.157         1030  228.1.157.6                      2001     1487  69.027490  749914.655655  76048000.000000          7             0          1633275              2
172.25.245.157         1039  228.1.157.15                     2001     1931  89.637493  973821.720729  97776000.000000          9             0          2248536              2
172.25.245.155         1042  228.1.155.18                     2001     1716  79.657114  865394.888539  86912000.000000          8             0          1967434              2
172.25.245.155         1038  228.1.155.14                     2001     1287  59.743360  649051.860811  43456000.000000          4             0           960844              2
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