After upgrading our Zabbix cluster from v4.2.7 to v4.4.7, I noticed that some of the graphs in our existing dashboards fail to render properly. Specifically I get the error message "No permissions to referred object or it does not exist!". However I confirmed that the items being referenced do exist and are collecting data properly. I can also view the graphs directly in the Latest Data and Graphs tabs without issue. I only get the error when viewing the graph in the dashboard. The graphs themselves are either simple graphs or classic graphs. I don't think it's a permissions issue because I can reproduce the issue using a Super Admin user. Re-creating the widget in the same dashboard does not resolve the issue, however I can re-create the exact same widgets in a new dashboard and the graphs load fine, so the issue seems limited to existing dashboards prior to the upgrade. Has anyone else seen a similar issue?