Hey Kent,
while I am not affiliated with Paybright in any way, I stumbled upon the same problem, it seems there is a small bug in the source code.
If you are ok with coding or have a ressource for that, you simply need to edit 2 lines in the file WCGatewayPaybright.php Ln: 52-53
add_filter('template_redirect', array($this, 'ssl_redirect_pb'), 1);
add_action('template_redirect', array($this, 'ssl_redirect_pb'), 1);
Please note that as soon as you will update your extension, the bug will reappear. I’ll contact them about this problem but I have not ETA about when it’ll be done.
This problem also happen to me, on a fresh new install. This only happen on the page for editing a content of type “page”, I have custom post type with the same editor, but on those pages it work.
