Why is this one so much lighter?

I’m done testing after this but I got a dye stealer on the 1st response last night. I then do it this morning and it’s the same color as the control line but it’s not a dye stealer on the clear blue it is but on the FRER it’s not. Btw the first one with the dye stealer is a 1 minute quick result and the other one from this morning is a FRER