I have a normal deck going in PPT 2016. I have a text box on one slide (not a placeholder box, just normal text box) that I copied to other slides throughout the deck. When I apply an animation to the first slide with the text box, that animation replicates to all the copy/pasted text boxes throughout the deck. Why is this happening? I've never experienced this before. It's not a master page issue, just inexplicably replicating. When I remove the animation from the original text box, it disappears from all the others as well.

Any help is appreciated.