I set up a new Agility project and started to enter a bunch of tickets but noticed that despite jira-users being explicitly listed and properly populated, the only two things I could assign a ticket to were myself and "Unassigned". I tried adding users manually using People but that didn't change anything.
I could (and likely am) doing something dumb -- it's been a while and my Jira admin skills have rusted. Searched for a similar report but came up empty, hence this plea for a pointer in the right direction.