htmlspecialchars() expects parameter 1 to be string

We accidentally had the social share block displaying without path restrictions, which means even with the fix in place we still got a fatal error on the user edit page. A ++ for the fix in #4 working: because it doesn't assume that $title will only be an array for the two specified routes and will always turn it into a string if it is an array, it should be more robust.

Automatically closed - issue fixed for 2 weeks with no activity.