wibbly said:It may be an optical illusion, but when the pic is enlarged it looks to me that the one on the right could be rotting away? Maybe both are rotting?
no , it is optical illusion
bulb on the right was growing very close to the main bulb, so it is very asymmetrical, all bulb mass is on the right side
I think I would only worry if the softness was confined to one place on the bulb. If it is soft around the whole bulb then I would guess it is just energy depletion.
A few of mine go very soft at blooming time.