As a workaround, if you use security with the tag parameter it does appear.
https://bugs.launchpad.net/launchpad/+bugs?field.searchtext=&orderby=-importance&search=Search&field.status%3Alist=NEW&field.status%3Alist=CONFIRMED&field.status%3Alist=TRIAGED&field.status%3Alist=INPROGRESS&field.status%3Alist=FIXCOMMITTED&field.status%3Alist=INCOMPLETE_WITH_RESPONSE&field.status%3Alist=INCOMPLETE_WITHOUT_RESPONSE&assignee_option=any&field.assignee=&field.bug_reporter=&field.bug_commenter=&field.subscriber=&field.structural_subscriber=&field.tag=security&field.tags_combinator=ANY&field.has_cve.used=&field.omit_dupes.used=&field.omit_dupes=on&field.affects_me.used=&field.has_patch.used=&field.has_branches.used=&field.has_branches=on&field.has_no_branches.used=&field.has_no_branches=on&field.has_blueprints.used=&field.has_blueprints=on&field.has_no_blueprints.used=&field.has_no_blueprints=on
As a workaround, if you use security with the tag parameter it does appear.
https:/ /bugs.launchpad .net/launchpad/ +bugs?field. searchtext= &orderby= -importance& search= Search& field.status% 3Alist= NEW&field. status% 3Alist= CONFIRMED& field.status% 3Alist= TRIAGED& field.status% 3Alist= INPROGRESS& field.status% 3Alist= FIXCOMMITTED& field.status% 3Alist= INCOMPLETE_ WITH_RESPONSE& field.status% 3Alist= INCOMPLETE_ WITHOUT_ RESPONSE& assignee_ option= any&field. assignee= &field. bug_reporter= &field. bug_commenter= &field. subscriber= &field. structural_ subscriber= &field. tag=security& field.tags_ combinator= ANY&field. has_cve. used=&field. omit_dupes. used=&field. omit_dupes= on&field. affects_ me.used= &field. has_patch. used=&field. has_branches. used=&field. has_branches= on&field. has_no_ branches. used=&field. has_no_ branches= on&field. has_blueprints. used=&field. has_blueprints= on&field. has_no_ blueprints. used=&field. has_no_ blueprints= on