Solution (for me): Every Apple watch I have ever owned has eventually had problems with the screen not working properly in a wet environment. I finally noticed that the water isn't beading up properly on the screen face, with a fine layer of water of varying thickness across the face, or little micro drops scattered across the face. Some pools are worse than others. For example, an outdoor pool that I swim in, next to a woodsy area, is the absolute worst. I suspect chemical additives, human sweat, and debris from the woods as being the culprit. I bought some liquid screen protector and applied it to my watch. That completely fixed the problem. The screen protector that I used was made by UltraArmor, but I would imagine that any of the liquid screen protectors shown on Amazon will work. Hope it works for you!