I am working in the 3.13 release. As far as the backslashes getting inserted into "Page/Post Info Items" form inputs with Saves, we are unfortunately back to the 3.0 release bug.
Here's mine after a few saves:
%date(\\\'j F Y\\\')% | %tags-linked(\\\'Tags: \\\', \\\', \\\', \\\' | \\\')% | %trackback-linked(\\\'Trackback URL\\\')% | %comments(\\\'Leave a comment\\\', \\\'1 comment\\\', \\\'% comments\\\', \\\'Comments are closed\\\')% %edit(\\\' | \\\', \\\'Edit\\\', \\\'\\\')%