Chicago 17th edition full note gives incomplete footnotes

Hello,
I am using Zotero to generate my in-text citations. On the first citation of a source it generates a correct full note, but when I cite the same source a second time it only generates "author", instead of the correct form of author and short title. The short title is added in Zotero. And I have tried several times to "reboot", refresh, and change styles to try to get it to correct itself, to no avail.
How can I fix this?
Thank you
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