Aatrox randomly stops auto attacking, q issues.

Anyone else having issues with aatrox? Ill be in the middle of attacking and then hell just randomly stop unless i click on something. Also his q is so buggy. I find it unfair that yi is untargetable during his alpha strike, but aatrox can just be swatted out of the air, or grabbed by blitz out of the air, or hit by anything that does not even belong in the air. Stunned mid-air, hit by azirs ult mid-air, you get the point.