Turns out I screenshoted the wrong filter. I was actually filtering by body contents (Body contains "https://launchpad.net/bugs/" (case sensitive) ) and the URI recently changed to https://bugs.launchpad.net/ thus evading the filter.
Turns out I screenshoted the wrong filter. I was actually filtering by body contents (Body contains "https:/ /launchpad. net/bugs/" (case sensitive) ) and the URI recently changed to https:/ /bugs.launchpad .net/ thus evading the filter.