When you have a large number of hosts and triggers, in Monitoring Overview, it's difficult to know which trigger you are clicking. It would be much easier if the host name would appear on top of "TRIGGER" in the popup dialog. See attached pictures.
I implemented it and here is the diff to implement (from Zabbix 4.2.3):
< : HISTORY_VALUES
> : HISTORY_VALUES,
> 'hostname' => $item['hostname']
< label: t('S_TRIGGER'),
> label: t('S_TRIGGER') + ' - ' + options.items.params.hostname,