There has been a change to the helm-discbinds Emacs package which can prevent which-key menu from displaying. https://github.com/syl20bnr/spacemacs/issues/16276 I've added the following to the Practicalli Spacemacs-config to prevent helm-discbinds mode from automatically loading and interrupting which-key. This seems to work well.

(remove-hook 'helm-mode-hook 'helm-descbinds-mode)