This is seen when creating a policy and choosing a target (see Fig 1 and Fig 2)
Fig 1.
Fig 2.
Then, change the target to a different target, save the changes, and do this two times.
When going back into the policy to see "Policy Rules/Action" as seen below, until you click off of the policy and then come back to it, the expandable window will not function.
Release: 8.6
Product Defect
This has been reported to development and is planned to be resolved in our upcoming 8.7 release.