CSS style comments fail

not sure if this is by intention, but I expected CSS comments to work. Here are some tests I added. I would print out the test results but color is pretty important.

    /* One line CSS Comment */

yields

    /* One line CSS Comment */;

Then 

    button
      /* Comment */
      color: yellow

yields

    button {
      /* Comment */;  color: yellow;
    }

etc.