Page header with no title does not have a back button

[Pat McGowan]

When pushing a page which does not have a title in it, the header does not have a back button therefore the user has no navigation.
This happens if there is no title property set or it is set but with an empty string.

This is occurring in certain applications that define the title dynamically and the content is occasionally blank.

This sample illustrates:

import QtQuick 2.0
import Ubuntu.Components 1.1
import Ubuntu.Components.ListItems 1.0 as ListItem
MainView {
    width: units.gu(48)
    height: units.gu(60)
    useDeprecatedToolbar: false

    PageStack {
        id: pageStack
        Component.onCompleted: push(page0)
        Page {
            id: page0
            title: i18n.tr("Root page")
            visible: false
            Column {
                anchors.fill: parent
                ListItem.Standard {
                    text: i18n.tr("Page one")
                    onClicked: pageStack.push(page1, {color: UbuntuColors.orange})
                    progression: true
                }
            }
        }
        Page {
            //title: "Rectangle"
            id: page1
            visible: false
            property alias color: rectangle.color
            Rectangle {
                id: rectangle
                anchors {
                    fill: parent
                    margins: units.gu(5)
                }
            }
        }
    }
}

[Tim Peeters (tpeeters)]

the whole header becomes hidden when no title is set.

[Tim Peeters (tpeeters)]

This is a tricky bug, as some apps may set the title to "" in order to hide the header.

[Launchpad Janitor (janitor)]

This bug was fixed in the package ubuntu-ui-toolkit - 1.3.1510+15.10.20150519-0ubuntu1

---------------
ubuntu-ui-toolkit (1.3.1510+15.10.20150519-0ubuntu1) wily; urgency=medium

  [ Loïc Molinari ]
  * Set QSGNode debug description on the shape-based nodes to ease renderer
    debugging. Fixes LP: #1437270
  * Ensured QSGLayer-based source textures (like ShaderEffectSource) are
    updated before rendering. Fixes LP: #1447495

  [ Tim Peeters ]
  * Update sections test program.
  * Document the correct version when Page.head.visible and Page.head.locked
    were added.
  * Revert to use the old header in trunk.
  * Introduce the new ActionBar component.
  * Restore moving property on AppHeader 1.2.

  [ Zsombor Egri ]
  * Provide versioning for theme loading. Each toolkit must be released with a
    well defined system theme version, and theme modules must have the same
    version as the toolkit. Fixes LP: #1447113
  * Fix import versions in entire UITK and examples. Move example code under
    1.3 folder. Fixes LP: #1447113
  * Separate 1.2 from 1.3 versions in all Ubuntu.Component modules.
    Fixes LP: #1447113

  [ Zoltan Balogh ]
  * Fix header CPO for 1.2 without moving attribute. Let the header CPO try
    both old and new buttons.

  [ Christian Dywan ]
  * Add version subfolder to benchmark test paths.
  * Only show handlers if text isn't empty. Fixes LP: #1450213.
  * Only print unique deprecation notes. Fixes LP: #1454281.

  [ CI Train Bot ]
  * New rebuild forced.

 -- CI Train Bot <email address hidden> Tue, 19 May 2015 10:47:09 +0000