Fixed Structured data: DiscussionForumPosting property dateModified seems wrong

This has been updated and the value is set from the modified date of the first post (when readily available, ie. on the first page).
 
Should it not be the value from the modified date of the last post?
The point of lastModified is to identify the datetime that the page was last modified or updated. i.e. lastModified should update when a new post is added to the thread or the last post was updated.

It's important that Google can see that there is fresh content on the page.
 
Top Bottom