Issue Summary

According to the documentation:

This trigger runs your rule each time the content status of a page changes to a status you specify (for example, “ready for review”).Content statuses are specific to each space. So, if you’re in Global Automation, the trigger can’t provide status selections until you set and save the rule’s Scope (in rule details) to a specific space or spaces. Once the scope is saved, both Suggested and Custom statuses will surface as options. 

The page with custom status:

The automation rule not showing the custom status:

Steps to Reproduce

1. Enable page statuses and custom page statuses on a space
2. Create a new page with custom page status
3. Create a new automation rule with the "page status changed" trigger
4. Select the custom content created previously

Expected Results

Custom content is available for selection in the trigger

Actual Results

Custom content option cannot be found in the dropdown

Workaround

Add the custom status as a Space setting, rather than as a user setting via Space settings > General > Suggest statuses.