This is v2 patch,   use completing-read-multipul.

At 2021-04-15 09:25:03, "tumashu" <tumashu@163.com> wrote:

Hello

    I have added  'simple option to org-fast-tag-selection-single-key,  please try and comment :-)

   (setq org-use-fast-tag-selection t)
   (setq org-fast-tag-selection-single-key 'simple)

   ;; better use vertico or selectrum :-)

   ;; (require 'vertico)

   ;; (vertico-mode 1)

thanks!