I am seeing the same issue on a client’s site hosted on my server. Her site is the only one seeing this issue. Checked all plugins, theme, and tried adding the ini_set(‘memory_limit’, ’64M’); line to wp-config, as well as tried adding define(‘WP_SITEURL’, <your_site_url>); to wp-config…. no results.
This has to be the strangest issue i have seen with a wp site over the last few years. The search for answers continues…