[unity8] can still drag windows while the app switcher is active

just to add, that you can do the same thing by Alt dragging the window (so not only by moving the window by the title bar)

This bug was fixed in the package unity8 - 8.15+17.04.20170308-0ubuntu1

---------------
unity8 (8.15+17.04.20170308-0ubuntu1) zesty; urgency=medium

  [ Albert Astals Cid ]
  * Let's follow the keyboard order
  * Enable the license check (LP: #1590044)
  * Show a barebones error message if loading the QML doesn't work
  * Make sure cursor is back to normal when closing the window (LP:
    #1666158)
  * Fix small warning when sensitive is undefined
  * Remove unused member variable
  * Initialize m_msecsSinceReference
  * Add warning if registerService fails
  * Move menus Component {} out of the repeater
  * Add tool to browse menus of a running app

  [ Daniel d'Andrada ]
  * Drag child windows with Alt+LeftMouseButton (LP: #1664947)

  [ Gerry Boland ]
  * TopLevelWindowModel: connect to the OSK surface to know when it goes
    away so we can clean up after it. (LP: #1670681)

  [ Josh Arenson ]
  * Initialize sessionMode to single when mock is reset (LP: #1667463)

  [ Lukáš Tinkl ]
  * Make the menu string "Back" translatable
  * Let the OSK be driven by a switch in indicator-keyboard (LP:
    #1521518)
  * Disable the tutorial when there's no touchscreen (LP: #1661557)
  * Shell chrome fixes (LP: #1658117, #1665723, #1665724, #1669010)
  * Cancel the drag as soon as we're entering the spread (LP: #1668642)
  * Fix being unable to use window control buttons or menus with touch
    (LP: #1667604, #1668387)

  [ Michael Terry ]
  * Set QT_IM_MODULE in the greeter so that the OSK can come up. (LP:
    #1670383)
  * Simplify our startup handling of Mir environment variables and set
    the right socket path in snappy.

  [ Michael Zanetti ]
  * Cancel the home key activation if something else is pressed along
    with Meta (LP: #1670678)
  * close the drawer when something is launched from the launcher (LP:
    #1660367)
  * use a svg instead of a png for the Launcher's BFB (LP: #1668057)
  * change the default setting for the launcher autohiding (LP:
    #1670655)

  [ Nick Dedekind ]
  * Split up Shell::test_spreadDisabled to ensure initial state for each
    test.

 -- Michał Sawicz <email address hidden> Wed, 08 Mar 2017 09:56:46 +0000