Progress bar in "Progress" section has a hole in it

Interesting. This doesn't happen using the same USC code in Precise. Thanks for reporting this, mpt!

I think it's not a bug in light-themes.

I think the ubuntu software center is using a background-color, overriding gtk theme ones, thus it colors the progressbar.
With Adwaita the problem is not noticeable because Adwaita is using a background-image, which in Gtk+ rendering has higher priority over background color.

Still not fixed...

Since I upgraded to Xenial I have this problem in the system monitor and the synaptic software center.

Only occurs in Ambiance, Radiance is OK

see one of the duplicates of this bug 1574452 for screenshots.

As Geert brought to my attention, bug 1052936 (reported in 2012) may be the same as this one I recently reported in Xenial (bug 1547119):
https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1547119

(see screenshot in bug description)

Status changed to 'Confirmed' because the bug affects multiple users.

Please fix this in yakkety first before SRUing.

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

Hello Matthew, or anyone else affected,

Accepted ubuntu-themes into xenial-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/ubuntu-themes/14.04+16.04.20160621-0ubuntu1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Excelent work :-)

On my System ( Linux B513 4.4.0-24-generic #43-Ubuntu SMP Wed Jun 8 19:27:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux ) the bug is fixed.

I can confirm the update in xenial-proposed also fixes the bug for me.

The update in xenial-proposed also fixes the problem for me. Nice work!

Can I request that the fix for Ubuntu MATE also be released please.

This bug was fixed in the package ubuntu-themes - 14.04+16.04.20160621-0ubuntu1

---------------
ubuntu-themes (14.04+16.04.20160621-0ubuntu1) xenial; urgency=medium

  [ Iain Lane ]
  * Re-style progress bars to fix them having a border but no
    background, for example in gnome-system-monitor. (LP: #1052936)

 -- <email address hidden> (<email address hidden>) Tue, 21 Jun 2016 08:08:37 +0000

The verification of the Stable Release Update for ubuntu-themes has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

@Martin: Please fix it in yakkety first; according to the tasks for ubuntu-mate-artwork it's not yet fixed in y and not even uploaded for x

Hello Matthew, or anyone else affected,

Accepted ubuntu-mate-artwork into xenial-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/ubuntu-mate-artwork/16.04.7 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

This was fixed in yakkety via ubuntu-mate-artwork 16.10.3.

This bug was fixed in the package ubuntu-mate-artwork - 16.04.7

---------------
ubuntu-mate-artwork (16.04.7) xenial; urgency=medium

  * Make GTK2 and GTK3 scrollbars consistent. Closes (LP: #1581168)
  * Fix progress bars so they are one colour. Closes (LP: #1052936)

 -- Martin Wimpress <email address hidden> Wed, 06 Jul 2016 09:26:32 +0100