I'm running ArcMap 10.3 and having a bit of trouble with a series of dot density maps showing population. There seems to be a glitch with some of the map files, as whenever I open them, the dot density value changes automatically and to some obscure, non-round value. For instance, my map of population should ideally show a ratio of 1 dot = 1,000 persons (as I originally set it), but sometimes when I close and then re-open the map, the value has shifted to 1 dot = 946.5467 persons or some random floating point value like that. It doesn't do this for all the maps and not even every time I open the same map...just some of the time for some of the maps. If there were a pattern to it, I'm sure I would have figured it out, but it seems totally random.
Has anyone else experienced this problem and/or know of a work-around?