CSS Code in General Settings only allows one setting per style

We really like using panels, Earl. Thanks so much!

I've recently noticed that the css styles entered into "CSS CODE" on the General settings page only seem to work if they're written with a single setting each.

For example, in order for this to work correctly:

.col-first { 
  margin-right: 25px; 
  vertical-align: top; 
  width: 315px; 
}

it seems I must break it into several styles like this:

.col-first { margin-right: 25px; }
.col-first { vertical-align: top; }
.col-first { width: 315px; }

I've also tried writing the 3 settings into a single line. But, the css in firebug only shows the first setting.

I've never noticed this before, but I haven't used the CSS CODE option very often in the past.
I have the css aggregation enabled.

Has this been reported before? I can't find any other issues about it.
Thanks!