The h1 on our landing page also disappeared. Custom theme I think was based on 2013. Do I need to go mess with the knowledge base php files? Or is there another way to solve this?
+1 to that request. It’s so easy to make pretty-looking slugs everywhere else, this bit took me completely by surprise (and I would rather not mess with the plugin itself).
I was seeing the same thing, looks like there are some missing quotemarks in wp-knowledgebase.php?
We had debugging enabled in wp-config, disabling that made the error messages go away, at least.