When used in conjunction with the plug-in "CMS Tree Page View," my custom field values gets erased when moving pages around with their ajax reordering feature.
My genius developer friend who found the bug says you can:
"Add a nonce check around line 531 of file
verve-meta-boxes.php. There's a note in there but no code. I _think_
that will fix it."
I hope this is helpful, and hope it can be fixed. Thanks!