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

• Unconfirmed if this step is required: Vector legacy
• Create an account
• Log in to a wiki that uses central auth, such as en.wikipedia.org. Probably need to select "keep me logged in" type settings to set the central auth cookies.
• Unconfirmed if this step is required: Go to Special:Preferences at meta and set your language on all wikis to be English
• Visit another wiki, such as en.wikiquote.org

What happens?:

• Ping and notice icons are malformed on first page load. Refresh fixes it.

What should have happened instead?:

• Ping and notice icons are normal on first page load. No refresh needed.

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

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

• HTML looks identical.

• Possible CSS issue. The following appears to be present in the working example and missing in the non working example.