Hitting Cmd-Z with this method helps someone to make a decision about whether the edit they just made is what they wanted.
FORBES: Why Does Adobe Photoshop Differentiate Between "Undo" And "Step Backwards"?
Needless to say, I lost the argument about the default behavior (what got assigned to Cmd-Z for out of the box installation) with the introduction of History feature.
Right now, you have to type Ctrl-Z (Cmd-Z on a Mac) to get rid of the buggers, but soon there will be an option to disable them all together.
FORBES: Google Docs Adds Translation Feature
Leave Step Forward as Cmd-Shift-Z.
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