I have no idea why this is suddenly wrong but I can't duplicate objects by holding down Option and click/dragging my mouse on the object. Still works in Illustrator.
First, reboot and see if it works again. If not, see Replace Your Preferences
It was something in the preferences, which was really hard to trash. I updated my iOS last night and then this weird thing started happening. Put only with InDesign and not Illustrator.
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