Inbox - sort by group - date - some headers missing

C

Clinton Betz

In the Inbox, when viewing received e-mails in date order, with sort by group
selected, only two groups appear: "Last Month" and "Older". But the e-mail at
the top of the list arrived today and other e-mails arrived last week, two
weeks ago, and even three weeks ago. How can I get these group headings to
reappear?
 
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