Bug: Loot not opening.

So, I finally managed to crawl my way up to Mastery 6 Jax. However, I hit a slight snag.

I can't open the Loot store. Every time I try, I'm faced with a black screen where the loot screen should be. Every other tab works just fine, but Loot is just... Missing? I figured it would resolve itself in time. Alas, after reading for a full hour, nothing has changed in the slightest. I'm still stuck with this black screen. I cannot disenchant the two mystery hextech shards I just bought after realising I did not have enough Blue Essence, and I cannot upgrade to a mastery 6 Jax. Sure, it's nothing game changing, however, it easily could be, were I attempting to open a box, or upgrade a champion shard.

It is, however, certainly annoying, given this only occurred after the most recent patch, along with several other Launcher related bugs that were absent before the rework on the Client.