Hi @hb ,
I suggest you try to check if your Word application also need to update, try to install the latest update.
After updating, if this problem is still existed I suggest you try to uninstall Office for Mac completely and re-install Office:
https://support.microsoft.com/en-us/office/troubleshoot-office-for-mac-issues-by-completely-uninstalling-before-you-reinstall-ec3aa66e-6a76-451f-9d35-cba2e14e94c0?ui=en-US&rs=en-US&ad=US
Try these methods and let me know the result, I'm glad to help you.
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