The panel in WebAuthenticationPanel.nib appears to have a cut-off sentence:
'Google Account (https://www.google.com/)'' Certified by: VeriSign Inc. Get more information by clicking ''Certificate'
This sentence fragment was added on purpose to simulate a spoofing vulnerability in the layout (see r42363).
This isn't an issue in practice, as the text is dynamically set (and it is resized if necessary) when displaying the sheet.
However, this could confuse localizers and should be changed to something less mysterious.
Created attachment 76421 [details]
Committed revision 73953.