From my POV either you don't quite get what the jumble moves are and made a few of them during the scramble, or you've got a friend/family member who got their hands on the puzzle and did them for you. Just because the puzzle remained in cube shape during the scramble doesn't mean that no jumble moves were made. If you turn two edges, UR and FL for example, to their first clockwise jumbling position and then do a full 180° turn of the UF edge you can easily undo those first two edge moves and still have a perfectly cubic puzzle. However, doing that sequence will have taken two center pieces out of their original orbits. The two remaining blue center triangle pieces are in the same orbit. There's no way to move either of them into another orbit, which is what you need to do, without doing a single jumble.
