I'm running into seemingly random Access Denied errors that occasionally come up on most (but not always all) node pages for anonymous and low-level users (anyone without the "Bypass content access control" permission).
- I've rebuilt permissions a few times, which fixes it for awhile too, but the behavior returns.
- I've scoured user permissions and don't think there's anything incorrect in there.
- We are not using any contrib node access modules.
Clearing the site caches fixes this, but it comes back after awhile, so I suspect this is cache-related. We use Redis.
This is a pretty new Drupal 8 site that used the Lightning install profile. We use Panels/Panelizer for layouts. We have a bit of custom code in place (a few form alters, a few blocks, a few redirects, nothing particularly complex - but it's certainly possible there's something off in there).
Anyone seen this before or have troubleshooting suggestions?