Why are my Actions drop downs not working post civicrm security update?
Another clue: the CiviCRM -&gt; Status page /civicrm/a#/status was completely blank
This helped [it's a cache clear of sorts]
Administer -&gt; System Settings -&gt; Asset Caching -&gt; Disable
brought both Actions as well as the Status page back. Then was able to toggle it back to -&gt; Auto
For one project I also had to re-run composer civicrm:publish (some bower assets - only some - most were there) - were just not there post upgrade.
Most sites upgraded just fine. Not sure what was/is different about the three sites I ran into this issue with. I wonder if it's redis... [I usually blame caching ]