Anyone else experience this?

Morgan • I have a son born on Dec '15, another son who was born Sept ‘17, and an angel baby born into heaven Nov '14. 💓
I took a FRER pregnancy test around 1pm today and as the dye traveled through the window, the second line appeared plain as day but then it was as if the dye was sucked out of it and left a very white line that faded as well. This all happened within 30 seconds to a minute.