This bug was fixed in the package appstream-glib - 0.5.13-1ubuntu6
--------------- appstream-glib (0.5.13-1ubuntu6) xenial; urgency=medium
* debian/patches/0001-Never-include-in-attribute-values.patch: - Handle '&' in attribute values (LP: #1780442)
-- Robert Ancell <email address hidden> Mon, 30 Jul 2018 11:43:02 +1200
This bug was fixed in the package appstream-glib - 0.5.13-1ubuntu6
---------------
appstream-glib (0.5.13-1ubuntu6) xenial; urgency=medium
* debian/ patches/ 0001-Never- include- in-attribute- values. patch:
- Handle '&' in attribute values (LP: #1780442)
-- Robert Ancell <email address hidden> Mon, 30 Jul 2018 11:43:02 +1200