org-superstar-item face is only applied to star-items

[memeplex]

Lists bullets starting with + and - are properly replaced using the mapping in org-superstar-item-bullet-alist but their face still is org-list-dt, so customization of org-superstar-item only affects *-bulleted lists.

[integral-dw]

Very odd, could it be a config issue? I tried the following minimum working example and could not reproduce the issue:
emacs -q -l ../org-superstar.el -l mwe-35.el sample.org
with the file being:

;;; MWE for #35
(add-hook 'org-mode-hook
          (lambda ()
            (org-superstar-mode 1)))

(set-face-attribute 'org-superstar-item nil
                    :background "red")

All item bullets (all three kinds) are highlighted red, using the correct face.

[jarofromel]

I have got in the same problem as described in this issue. I tried the snippet above and only the * bullets are highlighted red.
My configuration is doom-emacs, Emacs 28.1.
I will try it in near future on vanilla Emacs and report back.

[jarofromel]

I tried the snippet and it worked in vanilla emacs.
So it is probably the config issue as @integral-dw proposed.