Steps to replicate the issue (include links if applicable):

• Go to any page

What happens?:

• Notice no banner, but a "dismiss" button on the heaqder

What should have happened instead?:

• No dismiss dialog should be available if nothing is being presented

Software version (skip for WMF-hosted wikis like Wikipedia):
WM production

Other information (browser name/version, screenshots, etc.):

Appears to be for empty sitenotices