"User Group Access to Context" window displaying incorrect permissions when reopened

[muzzwood]

Bug report

Summary

When editing a user group's context access policy, if you select a new policy from the dropdown, then close the window without saving, and reopen it, the "Permissions in selected policy" field is not refreshed and still shows the permissions of the policy you changed the dropdown to.

Step to reproduce

Go to ACLs -> Edit user group -> Access Permissions tab

Observed behavior

For example, in the screenshot, "Load Only" was initially set. I opened the window and changed it to "Load, List and View". The permissions for the new policy were shown. I then closed the window without saving, and opened it again.
The dropdown correctly shows Load Only but the permissions for Load, List and View are still rendered.

Expected behavior

The permissions rendered should match the selected policy when opening the window.

Environment

MODX 3.x git