Known glitch? Initiate combat - view switches to full battle display - return from battle - numeric keypad 4 & 6 keys now move ships AND zoom main display at same time.
Execute a few zooms via keypad and the display picks up progressively greater spherical distortion at sides and lower edges. Clicking on "FIND" stops the aberrant zoom behaviour until the next cutaway and return from full battle screen. Once the perspective distortion kicks in, the only way to restore normal graphics perspective display is to save, quit, restart and GC2.