This bug was fixed in the package materia-gtk-theme - 20190201-1ubuntu1
--------------- materia-gtk-theme (20190201-1ubuntu1) disco; urgency=medium
* Fix Ubiquity theming issue (LP: #1822134)
-- Erich Eickmeyer <email address hidden> Thu, 28 Mar 2019 16:40:55 -0700
This bug was fixed in the package materia-gtk-theme - 20190201-1ubuntu1
---------------
materia-gtk-theme (20190201-1ubuntu1) disco; urgency=medium
* Fix Ubiquity theming issue (LP: #1822134)
-- Erich Eickmeyer <email address hidden> Thu, 28 Mar 2019 16:40:55 -0700