This bug was fixed in the package xfce4-indicator-plugin - 2.3.4-0ubuntu1
--------------- xfce4-indicator-plugin (2.3.4-0ubuntu1) bionic; urgency=medium
* New upstream bugfix release. - Fix missing label in clear indicators dialog LP: #1644917
-- Sean Davis <email address hidden> Sat, 10 Mar 2018 06:40:26 -0500
This bug was fixed in the package xfce4-indicator -plugin - 2.3.4-0ubuntu1
--------------- -plugin (2.3.4-0ubuntu1) bionic; urgency=medium
xfce4-indicator
* New upstream bugfix release.
- Fix missing label in clear indicators dialog LP: #1644917
-- Sean Davis <email address hidden> Sat, 10 Mar 2018 06:40:26 -0500