I think it will be something that will just always be that way, no way to fix it other than maybe sawcutting the concrete to provide a little path to the outside edge or an overlay.
It is this corner that does it and you can't see it with your eyes but when water is on it it puddles halfway between the corner of the pool and the outside edge of the deck and there is a really shallow little snake trail of water that runs into the corner of the pool.
I just think the concrete guys overworked it a little, same thing between the steps and the outside edge of the deck, water puddles there also but does not seem to run into the steps unless its raining hard.
Just little things I am beginning to notice now that we are in the clean up and restore the yard part of the project, I know no job is perfect but right now after spending all the money every little thing that seems a little off is bugging me.