Pasting text from Word

I experienced the same problem when copying and pasting from a Word storyboard.  For me the problem was tied to tables.  If I selected the entire table cell, I got those duplicates.  If I carefully dragged to the right edge of the last word, it pasted as expected.  It's fiddly, because in Word as you select text in a cell and overshoot the last character just a little bit, the whole cell gets highlighted.