Search fields were available in 7.1.9 versions and after migrating the system to 7.3.0 , its only available for some of ruletypes( Ex: Search is available for ruletype 'Agent schedule' but not for 'Agents'.
Kindly advise whether this feature is been restricted in 7.3.0 or are we missing some configurations?
I have reviewed the search features available in both Pega 7.1.9, Pega 7.3.0 and Pega 7.3.1 as well.
In Pega 7.1.9, search options were available for both Agents and Agents Schedule landing page though with Pega 7.3.0 release search feature was removed from Agents' landing page. I could also observe that search feature is removed for Agents Schedule landing page as well in Pega 7.3.1 onwards.
Earlier, in Pega 7.1.9 non-auto generated "pzViewInstances" section was used while from Pega 7.3.0 it was replaced with enhanced "Table Layout" format was used for the same section "pzViewInstances". It's part of UI update to leverage latest HTML5 and CSS3 features.
Though, if your requirement is to search specific agent. You can always use "Filter" icon configured and search for your desired agent rule as below:
Hope it answers your query, please mark it answered if it does.