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[Launchpad Bug Tracker <1448969@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package gtk+3.0 - 3.10.8-0ubuntu1.5

---------------
gtk+3.0 (3.10.8-0ubuntu1.5) trusty; urgency=low

  [ Thiago Bellini Ribeiro / Lars Uebernickel ]
  * debian/patches/0001-treeview-enable-column-resizing-with-horizontal-scro.patch:
    Cherry-pick some reverts from upstream to fix treeview column resizing
    with horizontal scrollbars shown.
    - Port of an upstream bug:
      https://bugzilla.gnome.org/show_bug.cgi?id=731054 (LP: #1448969)

  [ Iain Lane ]
  * Cherry-pick b4282e5 too to fix testsuite.

 -- Thiago Bellini Ribeiro <hackedbellini@xxxxxxxxx>  Thu, 30 Apr 2015
12:58:28 +0100

** Changed in: gtk+3.0 (Ubuntu Trusty)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1448969

Title:
  GTK3 can't resize treeviewcolumn

Status in GTK+ GUI Toolkit:
  Fix Released
Status in gtk+3.0 package in Ubuntu:
  Fix Released
Status in gtk+3.0 source package in Trusty:
  Fix Released
Status in gtk+3.0 source package in Utopic:
  Fix Released

Bug description:
  This is a regression from 3.8 present until 3.12 (it is fixed on
  3.14+).

  Two issues regarding tree view columns:

  1. When columns in a tree view are set to be resizeable and the
  horizontal scrollbar is shown, they cannot be resized.

  2. When columns are of fixed width, the horizontal scrollbar is not
  visible when it should be.

  The proposed fix is to backport a couple of reverts from gtk+ 3.14.

  [Test Case]

  For 1) Open nautilus and change it to list mode (Ctrl+1). Resize the
  window so that the horizontal scroll bar appears. The name column is
  not resizeable but should be with this fix applied.

  For 2) Open gtk3-demo (from gtk-3-examples) and run the "Tree Store"
  demo (under "Tree View"). Resize the window so that content on the
  right gets hidden. No horizontal scrollbar becomes visible unless this
  fix is applied.

  [Regression Potential]

  Any application using gtk's tree view with visible columns is
  potentially affected. However, resizing columns is not a common
  operation and horizontal scrollbars should rarely be visible.

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