[Bug 1818770] Update Released

[Łukasz Zemczak]

The verification of the Stable Release Update for horizon 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.

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https://bugs.launchpad.net/bugs/1818770

Title:
  Unexpected graybar on top of openstack-dashboard login page

Status in Ubuntu Cloud Archive:
  Fix Committed
Status in Ubuntu Cloud Archive pike series:
  Fix Committed
Status in Ubuntu Cloud Archive queens series:
  Fix Committed
Status in Ubuntu Cloud Archive rocky series:
  Fix Committed
Status in Ubuntu Cloud Archive stein series:
  Fix Committed
Status in horizon package in Ubuntu:
  Fix Released
Status in horizon source package in Bionic:
  Fix Released
Status in horizon source package in Cosmic:
  Fix Committed

Bug description:
  [Impact]
  On openstack-dashboard login page(the first pace we face), there is unexpected graybar on top of the page.

  I've been analyzing this page and found below code affects to this
  symptom.

  body.md-default-theme, body, html.md-default-theme, html {
      color: rgba(0,0,0,0.87);
      background-color: rgb(250,250,250);
  }

  If I remove above background-color, It is ok.

  I also found that upstream doesn't have the same symptom.

  It seems that xstatic override css setting when generating it.

  Please see the screenshots attached below.

  And this is happening from UCA pike.

  [Test Case]
  1. deploy openstack env with juju,
  2. check openstack-dashboard login page

  [Regression Potential]
  This patch updated ubuntu theme only. It could show us broken css even in worst case. Restarting apache2 and memcached daemon is required.

  [Others]

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