I went to edit my saved buttons and the format has changed, the action buttons don't work. The new format is horrid. A waste of space and with the bold typeface, hard to read. Why can't paypal leave working pages alone. If it ain't broke, don't fix it.
I've tried to edit an existing button with the new format (to remove the option for recurring payments) and it just wouldn't take. I tried several times, contacted support, and ultimately just had to create an entirely new button.
The new format still seems buggy for existing buttons, and having to update buttons that are used outside of paypal isn't always easy.