"Challenge Master" bug/typo?

Question

It is worded "win five flawless victories in a row", but I just got this badge on my fifth flawless victory with defeats inbetween

Answer 1

I think that it is a bug, I saw yours challenges and you only have 4wins in a row

Answer 2

It's strange, you can report it to SL
But well keep winning 😁

Answer 3

Right, but it was upon my fifth total flawless, which would be correct if they removed the "in a row" part