Folder choices appear in the order selected. So, untick unified folders so that favorite folders is the only one shown. then retick unified folders and that will appear below.

Hi David,

Thanks for the quick reply, this isn't quite what I meant. I would like the Favourites pinned so if the folder list is much larger than a screen height and I have scrolled the list down to see some folders below, I still wish to have the favourited folders shows at the top of the pane.

I hope this explains it better.

You are wanting it pinned to the top, not subject to scrolling. I am unaware of any way to do that.

Yes exactly, just pinning the favourite folders. I know that it's not possible yet, this is why I submitted this as a feature request 😉

If that is your intent, go to connect.mozilla.org and file this under IDEAS. This is the support forum, not for development. Thank you.