It's a bit confusing that if a rule only applies to a single project (the scope isn't 'Global') that some actions that can action issues in other projects wont see issues in those other projects. We should add a little info message in the config for those actions to make it clear that only issues in the current project will be actioned.
Components affected by this:
Related issues Action
JQL Scheduled trigger
Related issues condition (also see AUT-118)