Initially thought it might be the door seal or float relay switch, so I replaced both with no fix. Then I noticed that one of the arms of the lower sprayer was separating along the seam, water must have been spraying out the side right at the bottom of the door. Tested first by putting a few rubber bands really tight which appeared to decrease the leak significantly. So I replaced the lower spray arm and the leak is gone. Something to consider if your dishwasher leaks, as I had not seen this specific cause/solution mentioned elsewhere during my internet searches.