No Search Result in Elasticsearch UI for Third User Onward

Fresh install Nextcloud from 26.0.0 to 26.0.2 with Elasticsearch Version: 8.7.1.
All work well for the first 2 users with admin role.

From third user onward, we cannot retrieve any result from any document even it is sucessfully indexed.
From the result of sudo -u www-data php occ fulltextsearch:document:platform files XXXX, we discovered no value assign to “users” as below:

Is it bug in the program or the official license is requireded? Thanks.