do you have a clear plastic trim on the bottom of door, does it have a gutter. if so and it clips on it may have moved, it should tilt to the hinge side of door so that drops of water in glass door when open fall in gutter and drain into shower. if you have nothing on the bottom of door and the door is even a little out of level all the water will drain to lowest point. check the door for level and then ask how to adjust a glass shower door