can't get the admin hijack buttons to appear

[bjesus]

Hey, thank you for django-hijack, it served us well for years now.

We've been updating our django app from version 1.9.5 to 4.2.11 (I know, insane...). We got most things working, but I cannot get django-hijack to work anymore. We've updated it to the latest 3.4.5 version and we're running on Python 3.8.19. I'm loading the Admin site using django.contrib.admin.apps.SimpleAdminConfig

at the beginning, we had a custom admin view with a list of fields like this:

list_display = (
        "username",
        "email",
        "first_name",
        "last_name",
        "hijack_field",
    )

But django wouldn't start, complaining that hijack_field wasn't an available field (the HijackUserAdminMixin mixin from hijack.contrib.admin was used).

I've now tried completely removing any traces of the previous installation - all settings, mixins, imports - are gone. I have hijack and hijack.contrib.admin in my INSTALLED_APPS, and hijack.middleware.HijackUserMiddleware in the MIDDLEWARE list. I've disabled the custom admin view for users, so the default one is being used instead. and yet, the hijack button doesn't appear.

I'm a little lost regarding what to try further, as the docs don't mention anything special except adding the hijack.contrib.admin app.

What could be the reason that the button doesn't appear?