Steps to reproduce:

1. Navigate to Data collection->Templates.
2. Open the triggers list for AIX by Zabbix agent template.
3. Add any template group in the multiselect.
4. Open the Templates multiselect.
5. Observe: Access denied error.

Result:
See attached video: access_denied_multiselect.mp4

Expected:
The template multiselect popup opens without any errors.

Note:
This affects item, trigger, graph, discovery and web lists (context-template).