company-org-roam break completion of In-Buffer Settings (after #+) about company-org-roam HOT 2 CLOSED

You'll need to configure the company-backends. The settings you provided will show you only org-roam completions if they exist. If they don't, they'll show completions from elsewhere.

from company-org-roam.

Much harder to find than one might expect from your comment :D
https://emacs.stackexchange.com/a/30691/26301 did it for me.
Thanks!

update
Actually this simpler solution worked for me (Emacs 28.x.x)

(use-package
  company
...
  :hook                                 ;
  ((emacs-lisp-mode . (lambda ()
                        (add-to-list (make-local-variable 'company-backends) 'company-elisp)))
   (org-mode . (lambda ()
                 (add-to-list (make-local-variable 'company-backends)
                              '(company-capf company-org-roam)))))

from company-org-roam.