It seems to be ok if I put the custom namespaces at the bottom of the LocalSettings.php. Maybe an order/race thing.
I've added a custom namespace, and the $wgExtraNamespaces[NS_FOO] = "Foo"; line in LocalSettings.php seems to break it so that the "Manage Template" button and "Information about Template Data" at the top of the editor pages don't show up. I've tried commenting out different additions to the LocalSettings.php to see what breaks it, and it's definitely localized to these two lines (Namespace and Talk Namespace).
Advice?
I had a look at the code but unfortunately don't have an advice. The button appears exclusively in the Template namespace. Namespaces settings shouldn't affect it. Do you see error messages in the browser's JavaScript console?
[ZAoPZeU7uGrffEJTmVYQEwAAAYI] 2023-03-09 16:55:02: Fatal exception of type "InvalidArgumentException" (anonymous) @ load.php?lang=en&modules=startup&only=scripts&raw=1&skin=monobook:4
Tested it, and it only appears when I've got extra namespaces uncommented.
It seems to be ok if I put the custom namespaces at the bottom of the LocalSettings.php. Maybe an order/race thing.
