Required Mastery for next champion level seems to show incorrect in the champion section of client

Maybe I'm reading it wrong, but this always showed correct before. Since the client champions tab was upgraded, I noticed an issue with Mastery required to level up: Champion mastery for level 1 shows XXX/1800 points and correctly levels up to Mastery 2 at 1800. Champion mastery for level 2 shows XXX/4200 but actually seems to level up at 6000 points. 3 -4 shows XXX/6600 but actually seems to require 12500 (estimate, since I'm going by my closest champ ready to hit Mastery 4). 4 shows XXX/9000 but I remember this being something like 25000?