With Koha 20.11.01 on Ubuntu 18.04 running Elasticsearch 6x, links generated on the subject cloud page (/opac-tags_subject.pl) using the ./build_browser_and_cloud.pl script are broken due to the presence of a subfield in the query url. For example: Running /build_browser_and_cloud.pl -b -f 650a -t 650 -c succeeds in creating a subject list: see from https://library.craigbutosi.ca/cgi-bin/koha/opac-search.pl However, Subjects that include any subfield, generate links like the following: https://library.craigbutosi.ca/cgi-bin/koha/opac-search.pl?idx=su&q="Capitalism Political aspects." (Political aspects = 650 subfield x). Under Zebra, running the same script returned results even if subfields were present in the field and defined in the script I tried to adjust the script options -t and -f to include/exclude subfield definitions in various combinations, but no effect.