Ivern bugs

So i have played ivern a fair amount since he came out, obviously hes going to be buggy this is LOL not DOTA haha, but in experience the most serious one would be that daisy refuses commands alot, or will stop attacking for no reason mid fight, which can mean a win or a loss in a game which has happened before. another 2 bugs that arent overly bad but can be a tad annoying is when you go to mark a camp but he just spazzes out and wont do it(and yes i have made sure i have enough hp and mana and am clicking the right spot, and his W passive wont always work, the main time it doesnt is when i spawn brush on myself. but thats the main ones so far, would appreciate an eye to try and fix this, but then again there are no such things as bugs right? (quoting most bronze players that abuse a champs bug)