In the other thread I myself said: "Your problem looks like a light leak from the slot but it's nice to be sure before doing a replacement of the seals."

Honestly, I don't know why I said that. It really doesn't like look like a typical Hasselblad dark slide slot light leak at all, but every bit the result of uneven development due to (probably) stuffing too much film and solution in too little tank volume.

I may be wrong again though.