I downloaded the docker compose file from https://www.alfresco.com/thank-you/thank-you-downloading-alfresco-community-edition
It mostly works, but user search doesn't work from the admin panel:

I have tried other users.
I know very little about Tomcat or Solr, but with tcpdump I was able to figure out that when searching from the "People" tab a call is going to Solr. However, when I search from "Admin Tools" -> "Users and Groups" --> "Users" no call actually makes it to Solr.
I noticed in Firefox that people-enterprise is getting blocked.

Then I noticed this 404 (SB is one of the users):

The hint to "useCQ" doesn't help because I don't know what CQ is.
While this happns on a Mac with Firefox, a colleague of mine got the same issue on a Windows version of Chrome (didn't do network inspection, but same symptom). I ran this in a private browsing tab to try to avoid weird caching and plugin issues.
Does people-enterprise mean I have somehow installed the enterprise version when I went to the Community Edition page? What would be useful logs to look at?