Mastery Points not recorded in the end game screen when the grade would be S- or greater

​1. play annie in draft pick normal game at mastery level 5 with 1 token for level 6 2. end game with a win with the following stats https://prnt.sc/q7pvc5 https://prnt.sc/q7pvi0 https://prnt.sc/q7pvqh 3. Instead of receiving a mastery points grade and mastery points one receives the following: https://prnt.sc/q7pzun

Does not occur for any grades under S- S or S+ as I have played Annie dozen of times getting a number of grades from C- to A+ only when the game is a clear S- or higher does this bug occur.

Expected Result: receiving S grade and second mastery level 6 token. Actual Result: Receive no grade, no mastery points nor token.