[CLIENT] "recently purchased" tab in champion's page has never once been accurate

i know this isn't really a high priority issue but i find it kind of funny that when i switch to order my champions to "recently purchased" it shows me a champ i bought 4 years ago and doesn't show malzahar at all, who i literally just bought.

i really don't care that it doesn't work but it's a bug so i'm uhh. reporting it.