Inventory gold and gold granted by sources aren't the same (hard to find a suitable title)

Video a 2:25

Title: [6.14] - Gold from your inventory and what you earn in-game aren't always the same Server: EUW Type of Bug: In-game (not gamebreaking at all) Details: Basically, look at that damn vid (and subscribe :D) Expected result: Both numbers should have been the same (either 8 or 7)