It's the way your loading it. With "load bitmap" if you add a ",bitmapnumber" you change the working screen to that bitmap number. The only screen thats visible by the user is bitmap 0 (which is the screen you start on). You can change back to bitmap 0 with "set current bitmap 0"
"Load bitmap" is best used if you want to grab many images from the bitmap (with "get image") or if you want to manipulate the image before the user sees the results.
If your just loading a single image its better to use "load image" which is both "load bitmap" and "get image" in a single command... it also gets rid of the need to change back to bitmap 0.