Dynamic content macro passes invalid page ID on email render mode

Confluence Development Confluence Cloud
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1

We’re seeing a consistent problem that the email render mode for a dynamic content macro is receiving a request with an invalid page ID for the previous version from Confluence when the page is updated.

Assumption is Confluence is sending the two requests to generate a diff for the email notification. But the pageId for the second request is not a valid page ID (or at least not the page ID we can look up via the API).

Is this behavior for the email render modes a known issue, or is there something wrong with how we have configured render modes?

atlassian-connect.json excerpt (some lines omitted)

 "dynamicContentMacros": [{
    "key": "esign-block",
    "url": "/static/content-macro.html?view={view}&meanings={meanings}&invites={invites}",
    "renderModes": {
        "default": { 
            "url": "/page/content-macro-export?output={outputType}&pageId={page.id}&pageVersion={page.version}" 
        }
    }
...

Access Log Examples (# comments)

# Access log after all actions are on the same confluence page: ID=2745925635
# Pass - View page in confluence site, dynamic macro URL used.  
200 GET /static/content-macro.html?view=Compact&meanings=&invites=true&xdm_e...
# Pass - Export to Word.   
200 GET /page/content-macro-export?output=word&pageId=2745925635&pageVersion=5&xdm_e...
# Pass - Export to PDF.  
200 GET /page/content-macro-export?output=pdf&pageId=2745925635&pageVersion=5&xdm_e...
# Fail - Update (watched) page.  Server receives 2 requests, one valid page ID, and one is for a different page ID for the previous version.
200 GET /page/content-macro-export?output=email&pageId=2745925635&pageVersion=6&xdm_e...
404 GET /page/content-macro-export?output=email&pageId=2746023969&pageVersion=5&xdm_e...
# Fail - Update the same watched page again.  Same pattern but new invalid secondary page ID
200 GET /page/content-macro-export?output=email&pageId=2745925635&pageVersion=7&xdm_e...
404 GET /page/content-macro-export?output=email&pageId=2746253326&pageVersion=6&xdm_e...

API Request on the provide pageIds:

https://esign-dev.atlassian.net/wiki/rest/api/content/2746253326
404,  
com.atlassian.confluence.api.service.exceptions.NotFoundException: No content found with id: 2746253326

Thank you
Chris