So this weird bug happens

A weird bug happened to me just minutes ago:

I encountered a CP 224 Clefairy, after three balls it still broke out. Then, I threw the fourth ball and errored out back to the map, and then clicked on it, it changed into a CP 73 Abra! After 1 throw, it broke out and stayed! The next throw, I finally caught it. It gave me 3 Abra candies. But then, it changed back to a Clefairy and I got 3 Clefairy candies.