I think that the problem only occurs on the bug pages that select some package (such as https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/239129) and does not occur on other pages (for example, at https://bugs.launchpad.net/ubuntu/+bug/239129). That's the same bug 239129 presented on two different pages. This is a wild guess though and needs more testing.
I think that the problem only occurs on the bug pages that select some package (such as https:/ /bugs.launchpad .net/ubuntu/ +source/ net-snmp/ +bug/239129) and does not occur on other pages (for example, at https:/ /bugs.launchpad .net/ubuntu/ +bug/239129). That's the same bug 239129 presented on two different pages. This is a wild guess though and needs more testing.