Kayn scaling broken when pressing undo in shop. Plz help RIOT

I main kayne top and i was taking notice is some of my games, my damage wasn't hitting like normal. I noticed after flipping through items determing whether i should go long sword or corrupt potion and i see my scaling for my w said 0. it was wierd becuase i am use to it saying 13, so i thought at first you guys nerfed is scaling. that is without a long sword. I think there is a bug with the undo bottom in the shop and it messes up the scaling on kayn. i tested it and i end up losing half my scaling. i have two recorded pictures with a long swords, one where the w scaling is 29 and the other it is 21. can you please fix this.