After updating from Zabbix 5.2.6 to Zabbix 5.4.0, the widgets in the dashboards are not refreshed anymore.
Changing the refresh interval doesn't help.
The widgets are only refreshed when changing to another dashboard and then back or by reloading the browser.
Restarting zabbix_server or rebooting the VM doesn't help.
No errors in zabbix_server.log.