Alt-tab switcher can't be terminated by Escape key

[Marco Trevisan (Treviño)]

After the unity revision 2049 it's not possible to cancel the Alt+tab switcher by pressing Escape key.

[Launchpad Janitor (janitor)]

This bug was fixed in the package unity - 5.6.0-0ubuntu1

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unity (5.6.0-0ubuntu1) precise; urgency=low

  * New upstream release.
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