This is still unsolved on my end. Why should I change DPI just to fix it? 72dpi should be 72dpi for web. my artboard size is 1080x1080. Once I go to export persona, the size changes to 1081x1080 or 1081x1081. This is so random that it kills my workflow. I have to go thru all my artboards just to resize them 1 by 1. Furthermore, when I move some artboads in the design persona, it messes up the slicing in export persona. Now I have to delete all slices, reselect which ones to export again and create slices... AGAIN. Such hassle. I'm probably going back to Illustrator because of this.