This bug was fixed in the package ukui-control-center - 1.1.5-0ubuntu1
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ukui-control-center (1.1.5-0ubuntu1) cosmic; urgency=medium
* Didn't show 'Sleep' when can't hibernate. (LP: #1762119)
* Change bacrground-image when theme changed.
* Add theme settings page.
-- handsom
** Also affects: ukui-control-center (Ubuntu)
Importance: Undecided
Status: New
** Changed in: ukui-control-center (Ubuntu)
Status: New => Confirmed
** Changed in: ukui-control-center (Ubuntu)
Assignee: (unassigned) => handsome_feng (feng-kylin)
** Changed in: ubuntukylin