Redirects no longer working

Our redirects are no longer working as of about July 10th. For example, used to redirect to and no longer does. I can't unpublish the /training-calendar page because it has to be published in order to exist in the section outline, and the whole reason we have the redirect is so we can link to a page in a different section within the section outline.

I did notice we have over 15 redirects listed in Global Settings, but nobody on our team has added any recently, so I don't know why the redirects only stopped working recently.
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