Comment 12 for bug 28697

This bit me today, because <https://bugs.launchpad.net/bzr/+bugs?field.searchtext=zlib&orderby=-importance&search=Search&field.status%3Alist=NEW&field.assignee=&field.bug_reporter=&field.omit_dupes=on&field.has_patch=&field.has_no_package=> certainly looks (if you don't examine the URL) like it's finding 0 bugs containing 'zlib', but in fact it's only searching new bugs. Some filters seem to persist and others do not.