This bug was fixed in the package ubuntu-themes - 14.04+16.10.20160620.1-0ubuntu1
--------------- ubuntu-themes (14.04+16.10.20160620.1-0ubuntu1) yakkety; urgency=medium
[ <email address hidden> ] * Adds new CSS to style progress bars based on colours rather than images. This fixes the "empty progress bars" bug. (LP: #1052936)
-- <email address hidden> (<email address hidden>) Mon, 20 Jun 2016 09:42:52 +0000
This bug was fixed in the package ubuntu-themes - 14.04+16. 10.20160620. 1-0ubuntu1
--------------- 16.10.20160620. 1-0ubuntu1) yakkety; urgency=medium
ubuntu-themes (14.04+
[ <email address hidden> ]
* Adds new CSS to style progress bars based on colours rather than
images. This fixes the "empty progress bars" bug. (LP: #1052936)
-- <email address hidden> (<email address hidden>) Mon, 20 Jun 2016 09:42:52 +0000