[Client] Season highest grade not updating properly

I have recently gotten several S ranks on leblanc which is the champion I realized this was occurring on. When I checked my collection page, it has listed my season's highest grade as B regardless of how many higher grades I get. I have screen shots of this but can't figure out how to upload them on this. Most of my other champs update correctly but I have noticed this on Leblanc and shaco recently.

All screenshots taken a few days ago, no game played in between

Screenshot 1 showing Leblanc highest grade: https://gyazo.com/aec861f912ed2aeb6a2e458474b25a0e

Screenshot 2 showing match history of S ranks on Leblanc https://gyazo.com/a548c93f6621c5aa77c0c2c08d728a2b

Screenshot 3 showing Shaco highest grade https://gyazo.com/7e0d08fdfce97eb14e64ba9cbd2c142f

Screenshot 4 showing Shaco match history grade S at the top https://gyazo.com/3793e702a1e24a6ef84ab2ed96ccb598