How To Stop Email Links From Appearing In a Window On iPad?

When I I’m Mac mail on my iPad, I click on a link in the message and a third window emerges from the right side. It is never full screen. I then have 3 different windows open. This seems to have recently started…but I would prefer to have the view different…any way to change it? Sorry, I wish I could post a pic. Thanks Greg
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Greg Nelson