The problem is that you are drawing over the button. either you are not redrawing the button every frame, or you are clearing or actually drawing something over the button every frame.

There are two ways you can fix it. First way, which is what i suggest, redraw the button every frame.

The second is to not clear the RTV, and just make sure you draw over anything you don't want from the previous frame. not clearing the render target is actually a performance boost, but you may end up with stuff from the previous frames showing up on the screen if you do not draw over everything you don't want to see. for example, you have a point move across the screen. you expect to see only a green dot moving. instead, if you do not draw over where the dot was in the previous frame, you will see a line stretch across the screen.