@yani
I’m not using any particular calendar theme other than what is included in the plugin directory and I do have wp_footer() in the footer…
I do have a caching plugin installed which could have messed things up but I would only expect this if there were significant changes made in the theme between version 1.7 and 1.8
1.8 broke the styling of all buttons which made the calendar pretty much unusable. Reverting to 1.7 worked in my case.
I would appreciate it if the changelog would inform us about all changes that could be a potential risk for deployment. “Branding switch from Then.ly to Timely” sounded harmless to me so I went ahead and installed the update.
It turns out that this is problem with the Shibboleth plugin, which is using the sanitize_name function instead of the sanitize_title function for the user_nicename.
