Can’t access the template editor for WordPress in languages other than english

I’ve encountered this bug on version 1.0.11 running WordPress in Polish.

After publishing the template the message “In order to edit the template, you need to publish it first.” is still being displayed and there is no button to Edit template.

There’s an incorrect statement in \includes\metabox.php where you’re checking if publish button has text: “Update” to determine if the page is published or not. This isn’t a correct approach, as that text can be translated to other languages.