If the View, Display Option is "Fit Image to Window" the Window doesn't resize when showing or hiding the Toolbar, Menu, Status Line, or Caption.
However, if the Display Option is "Fit Window to Image" the window resizes on showing or hiding the toolbars. This is to be expected if a different image is loaded, but not otherwise.
However, if the Display Option is "Fit Window to Image" the window resizes on showing or hiding the toolbars. This is to be expected if a different image is loaded, but not otherwise.