Some permissions which are editable(in default permissions) with dependent checkboxes are not editable in FPA.
I am trying to reproduce the bug for "Post Comments" permission, similarly it can be done for other permissions also.
1. Uncheck "Authenticated User" in "Post Comments" permissions
2. Ideally it should enable the checkbox for "Administrator" and "Test 1"
3. However when checked in first column(for "Edit own comments" permissions and some others) and unchecked, it unchecks disabled permissions but cannot be checked.
4. Attached screenshots of Drupal 7 and Drupal 8 to compare.
However all these permissions are editable in drupal's default permissions module.
Closed: cannot reproduce
2.0
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.