It looks like you have directly submitted this page for publishing, skipping the approval process. When you create a page this step is not registered in the History section. However steps like "Submit For Approval", "Approve", "Decline", etc. are registered. In the current version the "Submit For Publishing" step is omitted from these steps as you could see the pages pending for publishing in the "Publish Site" section but it sounds like a very reasonable suggestion that we should track such changes in the History.
Yes, in the next version we should definitely update the "Intray" section and make it track more changes. Perhaps we should make some rearrangements to this section.
The suggestion for the feature which will allow the administrator to toggle between different users' history screens also sounds very nice and we have added it to our TODO list for some of the next version of Sitefinity.
We really appreciate your feedback.
the telerik team