Move to line begin is broken.

[notuntoward]

When this config:

(global-visual-line-mode +1) 
(use-package crux
   :bind (("C-a" . crux-move-beginning-of-line)
          ("M-'" . crux-duplicate-and-comment-current-line-or-region)
          ("C-c R" . crux-rename-file-and-buffer)
          ("C-k" . crux-kill-and-join-forward)))

C-a does not go to the beginning of the line the cursor is on, but to just before the previous newline.

[bbatsov]

See e391262