It seems that your Browser could be preventing this from encoding correctly. Or could mean that the encodings on Confluence are not correctly set. Maybe using UTF-8 correct the problem.
Usually this resolves, but if not, let us know. It may be similar to this case:
More and more people are building their careers with Atlassian, and we want you to be at the front of this wave! Important Dates Start the Certification Prep Course by 2 April 2019 Take your e...
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