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[Marc Deslauriers <marc.deslauriers@xxxxxxxxxxxxx>]

** Information type changed from Private Security to Public

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https://bugs.launchpad.net/bugs/1447078

Title:
  Xorg should mark damaged window areas after some timeout

Status in xorg package in Ubuntu:
  New

Bug description:
  When applications do not respond to Xorg redraw requests (eg. a window
  is raised on a non compositing desktop and the applications have some
  computation going on, for example LibreOffice Calc) for some area of a
  window for some milliseconds, Xorg should fill the area with some
  color.

  Otherwise applications not serving redraw requests may expose windows
  showing another applications content, leading to erratic manipulation
  by the user into the unresponsive application, which later responds
  erraticallty.

  For example, having LibreOffice Calc do some calculations that may
  take a while, bring a browser to front,  bring LibreOffice to front,
  still seeing the browser with at some time LibreOffices' progress bar
  popping in at the bottom. However, most of the screen may be covered
  by a web page, you try to enter password at, and dang, if LibreOffice
  is finished, the password actually appears visible inside the
  spreadsheet.

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