🐛 Fix problem with login shoing wrong credentials

frontend/src/app/main/ui/static.cljs

@@ -27,6 +27,7 @@
    [app.main.ui.ds.buttons.button :refer [button*]]
    [app.main.ui.ds.foundations.assets.icon :refer [icon*] :as i]
    [app.main.ui.ds.foundations.assets.raw-svg :refer [raw-svg*]]
+   [app.main.ui.ds.product.loader :refer [loader*]]
    [app.main.ui.icons :as deprecated-icon]
    [app.main.ui.viewer.header :as viewer.header]
    [app.util.dom :as dom]
@@ -558,8 +559,10 @@
         auth-error? (= type :authentication)
         not-found?  (= type :not-found)
 
-        authenticated?
-        (is-authenticated? profile)
+        authenticated? (is-authenticated? profile)
+
+        ;; Keeps whether the user was authenticated when this component first mounted.
+        initial-authenticated? (mf/with-memo [] authenticated?)
 
         request-access?
         (and
@@ -575,13 +578,23 @@
 
 
     (if (or auth-error? not-found?)
-      (if (not authenticated?)
+      (cond
+        (not authenticated?)
         [:> context-wrapper*
          {:is-workspace workspace?
           :is-dashboard dashboard?
           :is-viewer view?
           :profile profile}
          [:> login-modal* {}]]
+
+        ;; The user was not authenticated when exception-page first
+        ;; mounted, but they have just logged in via the login modal.
+        ;; Show a loading indicator to prevent briefly flashing the
+        ;; "no permission" dialog.
+        (not initial-authenticated?)
+        [:> loader* {:title (tr "labels.loading") :overlay true}]
+
+        :else
         (when (get info :loaded false)
           (if request-access?
             [:> context-wrapper* {:is-workspace workspace?