Css injector, node edit bug

Hello, i fing some bug.

At first, small bug. When you want delete CSS rule without anything in css box, it is make error.

And second.
I made video.
http://www.youtube.com/watch?v=55gRPp82X_A,

Hare you can see bug. It is new installed D7 with CSS injector. Rule in CSS is about images. And how you can see, even I forbiden load CSS rule on node/*/edit. It will load after I make something in node edit.

Here is our css code

.field-name-field-gallery img {
  display: block;
  margin: 0;
}

.field-name-field-gallery {
  float: right;
  clear: right;
  padding-left: 10px;
}

.field-name-field-gallery {
  width: 320px;
}

.field-name-field-gallery img {
  float: left;
  padding: 10px 10px 0 0;
}

.field-name-field-gallery .field-item:nth-child(3n-2) img {
  padding-right: 9px;
}

.field-name-field-gallery .field-item:nth-child(3n+3) img {
  padding-right: 0;
}