Blockquote in Atto behave differntly in different browsers

IE

1. To move cursor using blockquote, user have to enter text first and select it.
2. Similar problem with ordered and unordered list
3. Indent text and then use ordered/unordered list remove style on blockquote

IE, FF and Opera

1. Indent text and blockquote gets added with style border-left: {5px solid #EEEEEE}

   , where as in chrome it doesn't have any color. It will be nice to remove color from blockquote border-left, as this doesn't seem correct and is added as it is.