Thanks for reporting, raised feature request for v2 web ui: Event filter dropdown does not include marker recorded events · Issue #584 · temporalio/ui · GitHub.
You should probably switch to v2 as all changes/updates are done against it, web ui v1 no longer receives updates and its recommended to switch to v2.
Hi tihomir, I cannot change the UI, we are using the Temporal Cloud which doesn’t have the category.
If you are on cloud you should be able to open a zendesk ticket and requires that your instance(s) get upgraded to v2.