Store Items Gold Value Bug of somesort

The very first normal game I had after patching was meet with with Ping spikes (which arent the focus of the thread) and a weird bug I never seen before and I also dunno what could had triggered it.

I am assuming I had a different store gold value than the one the game was showing me. I had enough to buy a certain item because I had its components and it wouldnt let me buy the final thing despite I clearly having more than enough gold for it. (And no, I hadn't used the Future's Market rune)

I sold the item's components and then it would let me buy the final item for some reason like I did with .

Assuming the gold value shown ingame was correct I also apparently bought an overpriced and a underpriced !

Is this Riot's not so subtle way to tell me I shouldnt be using as a Support?? [sg-lulu]

Thank you for the attention and goodluck on the Rift,

*LifelessAngel *

UPDATE:

Using Hextech Repair Tool to reinstall LoL didnt work!