Editing Styles, i.e. 'Rounded Corners' does not remove associated markup

[This looks like a cTools issue, but I will post the bug here since it appears to the user as a Panels Bug. ]

I have a three column layout where I was adding a 'rounded corner style' to the middle column. I added the rounded corner style, and the plain box styles, then later decided I didn't like it, and that I would add my own shadow through CSS. The style was removed using the GUI, and set to 'No Style'. I then added custom CSS IDs and classes, using the GUI as well. The custom CSS appear just fine, but the old styles that I added and then deleted are still there and are in place at a higher lever then my custom Ids and classes, making it impossible to change my style.

When you inspect, it appears as though ctools is caching the styles I added and deleted, giving them a temporary class, as follows (from ctools css):

.region-plain-box-temporary-b081a6d629df306004d1771e09446338 {
padding-right: 1.5em;
padding-left: 1.5em;
}

.region-plain-box-temporary-b081a6d629df306004d1771e09446338 {
padding-top: 10px;
margin-bottom: 10px;
color: black;
background-color: white;
}