I can reproduce the issue. I ran the latest horizon master branch f911d0dd406f60fa9df5891ff5760f2251fc96b0 by using runserver tox env (tox -e runserver). After adding ENFORCE_PASSWORD_CHECK = True to local_settings.py, I see the message "The admin password is incorrect.".
Note that I confirmed my admin password is correct by copying the password I typed in the "Change Password" form and then re-login horizon by using the copied password. I believe my admin password is the expected one.
I can reproduce the issue. I ran the latest horizon master branch f911d0dd406f60f a9df5891ff5760f 2251fc96b0 by using runserver tox env (tox -e runserver). After adding ENFORCE_ PASSWORD_ CHECK = True to local_settings.py, I see the message "The admin password is incorrect.".
Note that I confirmed my admin password is correct by copying the password I typed in the "Change Password" form and then re-login horizon by using the copied password. I believe my admin password is the expected one.