We have just released a bugfix release for the Search Guard Kibana plugin. It fixes issues with multi-tenancy while upgrading from Kibana 7.11 or earlier to Kibana 7.15. If you are using these setups and have experiences problems during the update process, then updating to the plugin version 52.1 is recommended.
Search Guard Kibana Plugin 52.1
Search Guard (®) is an Elasticsearch plugin that offers encryption, authentication, and authorization.
Coded with love in Berlin, Denmark, Sweden, Italy, Ukraine and the US.
Search Guard is a trademark of floragunn GmbH, registered in the U.S. and in other countries.
Elasticsearch, Kibana, Logstash, and Beats are trademarks of Elasticsearch BV, registered in the U.S. and in other countries.