On Dashboard or on Problems page we using popup on problem.name link to redirect on proper URL composed from item , when event was created.
If we have trigger with PROBLEM event generation mode= Multiple and trigger have more than one event in PROBLEM state then on dashboard are displayed all PROBLEM occurences.

We need compose trigger URL with values when the event was created, like it is prepared in Trigger.name or in Operational.data fields or TAG values.

Till now for popup link Trigger URL can use only last item value and not original value. If Trigger URL can use TAG value from prolem/event , we can prepare that value using regsub before popup is builded in GUI, Or zabbix need to create new field like opdata in evens but for URL in problems.