allout-widgets-track-decoration is a variable defined in `allout-widgets.el'.
Its value is

  • Automatically becomes buffer-local when set.

If non-nil, show cursor position of each item decoration.

This is for debugging purposes, and generally set at need in a
buffer rather than as a prevailing configuration (but it's handy
to publicize it by making it a customization variable).

You can customize this variable.

This variable was introduced, or its default value was changed, in version 24.1 of Emacs.