Steps to reproduce:

1. Create a regular item collecting some basic event log entries ( eventlog[system,,,,,,skip] ) :
    
2. the latest data for this look like:
    
3. now if we create a dependent item with a filter to a specific event id ( eventlog[system,,,,7036,,skip] ):
   
4.  the latest data column shows that it's correctly filtering by the Event ID but all the extra information is lost:
   
5. I can also see that all supporting information is lost when using an arbitrary item key in the dependent item ( eventid.system.7036 ):
   
   

this was originally discovered while running 6.4, and instance was upgraded to 7.0.0 to see if there was any change but the behavior remained.

Instance is running in docker with the following images:
zabbix/zabbix-web-apache-pgsql:latest
zabbix/zabbix-server-pgsql:latest
they are freshly pulled images as of June 4th

Expected:
 Dependent item with no preprocessing and same information type should show the same information as the master item