OK, here is the scenario. I have a object and I select it with the magic wand. Inverse the selection and select a new active layer. When I do a fill of any type (color, pattern, etc..) there is a think line around the object that was selected not filled with color. This thin "unfilled" line follows the magic wands selection, and this is driving me crazy!!
Try Select t with another tool like quick selection tool (W)
Or go Select > Modify > Expand and add one pixel to the selection, and fill on a layer further down the stack so that there is overlap. It is never good practice to fill selections all on the same layer.
I select from one layer and go to a fill layer to fill the selection. This is a normal action when filling a selection?