I would think it is an indication of a hollow.
If the edge has been sharpened, the cladding hasn't been wrapped around. What you're actually seeing is a spot where the cladding was thicker (due to a probable hollow) and to grind out the cladding so close to the edge would shorten the height of the blade.
If the edge has been sharpened, the cladding hasn't been wrapped around. What you're actually seeing is a spot where the cladding was thicker (due to a probable hollow) and to grind out the cladding so close to the edge would shorten the height of the blade.