More than asking, this is a bug report.
If you search by tag on the inbox, I only see results up to Feb 4th, I have seen this issue for the past several days. and I know I have recent entries with the tag I search for. I even clicked on the tag for the last item, which happened yesterday, but I still get Feb 4th as the last found set.
This is for our #production tag, our #demo tag shows up to April 20th, but again, we have entries for yesterday, May 3rd