So RIOT makes changes to map (cristal wards on map) and explains nothing about it

Can't find anything about it in the latest patch notes. Nothing about it in the home screen. Nothing in the begin of the game. It's like: "meh let's change this and let them figure it out" Lost valuable in game time figuring it out. NOTE: if there's info about this, they should do a better work in making it accessible.
Report as:
Offensive Spam Harassment Incorrect Board