Small list of bugs
These are all gameplay bugs.
The first champ I have noticed bugs with is Morgana. When using her ultimate inside of a J4 ultimate you can walk in and out of his ult as long as your shackles are attached to someone. I'm not sure if this is the same with Anivia's wall but it would be worth testing.
Morgana also has a bug with the rift crab that allows for easy vision control. When she uses her dark binding on it and places her tormented soil down just as the binding is about to end, the crab stays still in the tormented soil as if it were snared. I play Morgana support a lot and it makes getting the bug too easy, it is a small bug but combined with her ult bug with J4 she is somewhat broken.
The last bug I've noticed is with Anivia. I call it the spiked wall bug. If you buy an elixir of sorcery and use your wall directly on someone it procs the true damage passive, basically allowing your wall to damage your enemy for a small amount of true damage. Not a big deal until the long range wall is used as an executioner spell and cuts your head off.
This is all I have noticed for now. I'd also just like to say that the boards format is terrible and I miss the old forums.