I am referring to the second point. Currently, the white minions are reflecting more damage than the rare (yellow). Will the damage amount be reduced or is this problem being addressed by creating a timer as indicated in the patch note?

Link to the blue post that confirmed the bug:
http://us.battle.net/d3/en/forum/topic/7349425431?page=2#39

The Reflects Damage affix has been redesigned:
It will now apply a short duration buff to the monster and will only reflect a percentage of damage dealt back to the player while that buff is active
A visual effect will display whenever the durational buff is active