as admin i can see results running a tstats summariesonly=t search. Same search run as a user returns no results. As that same user, if I remove the summariesonly=t option, and just run a tstats...... search that user can return results. The Datamodel has everyone read and admin write permissions.
Data model is accelerated? Also can you try using allow_old_summaries=t
instead of summariesonly=t.
I did use allow_old_summaries and it works for the user. Not sure what that does exactly thats different and why summariesonly doesnt work for that user.