[Bug 792460] [NEW] dropdown menu inconsistency in software-properties Updates tab

[extra_glass]

Public bug reported:

Binary package hint: software-properties-gtk

Updates tab contains a dropdown menu which is inconsistent. 
Notice that first dropdown looks different to the second one in the screenshot.

** Affects: software-properties (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/792460

Title:
  dropdown menu inconsistency in software-properties Updates tab

Status in “software-properties” package in Ubuntu:
  New

Bug description:
  Binary package hint: software-properties-gtk

  Updates tab contains a dropdown menu which is inconsistent. 
  Notice that first dropdown looks different to the second one in the screenshot.