Master Yi alpha Bug

im enjoying yi after alpha fixes but there's something wrong with it yet..there's kinda like a bug where i can't use my alpha when it's off CD like..it says it's off CD but i can't cast it it happend like 5 times with me so long after alpha fixes plus there's something kinda of another bug where when i alpha strike someone after i finish the duration while being untarget yi stops in his place for like 0.5 secs and doesn't move unless i aim at the target again it doesn't happen often but it's annoying note: My Auto attack setting is on please look it this riot and try to fix it . thanks