Does anyone else have a problem with the WebOS email client showing ALL folders on an IMAP server instead of just the subscribed ones?

I have created tons of folders on my IMAP server over the years, and I've unsubscribed from many of them. By which I mean that I use the option in Thunderbird to show only the folders that are currently useful. I'll resubscribe to an old folder occasionally to retrieve an old message or file something, so I don't want to simply delete them permanently. When I change the subscription status of a folder, it changes the setting on the server because the change is visible in both my Thunderbird clients and my Squirrelmail web client.

But the Pre shows every folder. This is quite annoying because getting to any folder I need to reach requires pages and pages of scrolling.

Anyone having the same issue? Anyone know of a solution?