Found 2 bugs in my gameplay

when i just lock in for vel'koz, i found a bug where it has 2 classic skins. i used it in the champion rotation, and it is my first time use this champion. the second time i was using master yi jungle, for the 4th time killing a moster i think, it is blue buff didn't do damage to me only the 2 small staff did remember the spell for master yi is so yea the bug