Evil: Attempt to fix Shift-Tab.

.emacs.d/lisp/init-evil.el

@@ -201,7 +201,13 @@
       (kbd "M-<return>") 'ambrevar/evil-org-meta-return)
     (with-eval-after-load 'org-agenda
       (require 'evil-org-agenda)
-      (evil-org-agenda-set-keys))))
+      (evil-org-agenda-set-keys))
+
+    ;; REVIEW: Fix shift-tab in Evil org.
+    ;; See https://github.com/emacs-evil/evil-collection/issues/53.
+    (setq evil-collection-outline-bind-tab-p t)
+    (evil-define-key '(normal visual) evil-org-mode-map
+      (kbd "<backtab>") 'org-shifttab)))
 
 (with-eval-after-load 'gnus (require 'init-evil-gnus))