Photoshop Elements :: Brush Tool Changes Shape In 11?

The brush tool shape changes when zooming into an image.  Instead of the normal circle to indicate the area that will be affected by the brush, it turns into a large curved  X, or a large half moon.  Sometimes there are two, three or four horizontal ovals (instead of one circle) going across my image.  When I continue to zoom in further, it returns to a circle. Caps Lock and is off.  I discovered that when this happens, if I press the CTRL key, it returns to a circle