Minions - Creepblock, frozen minions, last hits on bonus dmg failing and minions wont lose aggro.

I have noticed this quite a few times when playing recently that the creeps will block me more in this patch than they did in previous patches, especially with larger champions. Another annoying bug is that minions will not deaggro me at all with certain champions at level 1. I have noticed this with gangplank, pantheon and kassadin. I attack the enemy champion, back off to avoid aggro but then get chased forever until vision is lost by 1 or 2 minions, causing me to take a boatload of extra damage.

Another thing I have noticed is that last hits sometimes did not apply, usually if killing them with any kind of mastery bonus damage or on hit effect.