MarkMail link for the discussion: https://markmail.org/thread/x7paa3ulljns6awh
While working on a Production environment, I have found that for some reason entity timestamp fields are disabled at Search Results screen in Trunk and the previous release branch. It is available at View Value screen. It was enabled in Release 16.11.
These fields are helpful for developers to get the idea about when the row in the entity is created/updated. Extremely helpful while working on the Production environment.