Crash when accessing a preview in the uapp explorer scope

[Albert Astals Cid]

When trying to access a preview in the uapp explorer scope it, unity8-dash crashes

Backtrace: http://paste.ubuntu.com/16387928/

[Paweł Stołowski (stolowski)]

Ok, the scope has a bug as it pushed two widgets with same ID on preview. Obviously we shouldn't crash, so that needs to be handled. Respective snipper of unity8-dash.log when this happens:

--- Widget lookups dump "addReplaceWidget" ---
Widget "header" at position 0 , lookup index 0
Widget "art" at position 1 , lookup index 1
Widget "types" at position 2 , lookup index 2
Widget "author" at position 3 , lookup index 3
Widget "hearts" at position 4 , lookup index 4
Widget "stars" at position 5 , lookup index 5
Widget "actions" at position 6 , lookup index 6
PreviewModel::addWidgetToColumnModel(): processing widget "author"
PreviewModel::addWidgetToColumnModel(): destination for widget "author" is row 7 , column 0
PreviewWidgetModel::moveWidget(): invalid destRow 7

The offending widgets are authorWidget and moreWidget in this code, both with "author" id: https://github.com/bhdouglass/uappexplorer-scope/blob/master/src/uappexplorer-scope.go

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Paweł Stołowski (stolowski)]

Opened a bug against the scope: https://github.com/bhdouglass/uappexplorer-scope/issues/6

[Launchpad Janitor (janitor)]

This bug was fixed in the package unity-scopes-shell - 0.5.7+16.10.20160525-0ubuntu1

---------------
unity-scopes-shell (0.5.7+16.10.20160525-0ubuntu1) yakkety; urgency=medium

  [ Gary.Wzl ]
  * Stop typing timer when reset navigation tag(tapping cancel). Also
    make sure relevant signal(searchQueryChanged) is triggered to keep
    query string updated as query string is empty after tapping cancel
    (LP: #1576311)

  [ Marcus Tomlinson ]
  * Only create an empty settings file when attempting to write to one
    (LP: #1583055)

  [ Pawel Stolowski ]
  * Don't depend on qt5-default.
  * Reject preview widgets with duplicated IDs. (LP: #1581495)
  * Set internet connectivity status in ActionMetadata (previews and
    preview actions). (LP: #1502282)
  * Workaround dependency issue on yakkety.

 -- Pawel Stolowski <email address hidden> Wed, 25 May 2016 08:16:27 +0000