Bug Hyperlinks copied from external sites show up in html format on my forum

There is a bug in this version
A

Aaron1981

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I copy a hyperlinked text like the one below to my forum:
As social scientists, psychologists aim to understand the behavior of individuals and groups. [3][4]
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On my forum, it shows up as this:
As social scientists, psychologists aim to understand the behavior of individuals and groups.<a href="Psychology - Wikipedia"><span>[</span>3<span>]</span></a><a...
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