I don't know when this feature was added, but I just ran across it.

When a modal dialog is open and you try to do something else (instead of
dealing with the dialog), the system wiggles the dialog.  Bringing my
attention to it to deal with the issue.

Not having modal dialogs might be nicer - but this does a nice job bringing
your attention back to what needs to be completed.

thanks!

-cbc
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