What could lead to this: object/object?
Can you reproduce that with the browser add-on or does it only happen on the homepage?
I tested it here using the add-on for Firefox; (FF broke down on the other machine by the recent forced update) the report is not strange there, but not correct either. It suggests to delete the ’ , not either the space before or after. The original report was on languagtool.com, logged in.
Could you open an issue at github, providing the complete text needed to reproduce the problem?