"Season Highest Grade" not displayed when ineligible to recieve loot

I'm not asking to get chests or keys from it, I'd just like if the season highest grade on a champion would update.

I've gotten an S+ on Zac and Brand and multiple S and S- grades on them and Sona but they still only say highest was an A+, and I'm positive it's because I'm currently "ineligible to recieve loot"