From ef7087adb653dc30a61488ec9087cc2f6d619bd0 Mon Sep 17 00:00:00 2001
From: David Aaron Suddjian <1858430+suddjian@users.noreply.github.com>
Date: Wed, 4 Nov 2020 14:27:32 -0800
Subject: [PATCH] fix(dashboard): properly unset mountedTab in  reducer
 (#11558)

---
 .../src/dashboard/reducers/dashboardState.js             | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/superset-frontend/src/dashboard/reducers/dashboardState.js b/superset-frontend/src/dashboard/reducers/dashboardState.js
index c7fde4abeb..6a21dec940 100644
--- a/superset-frontend/src/dashboard/reducers/dashboardState.js
+++ b/superset-frontend/src/dashboard/reducers/dashboardState.js
@@ -124,13 +124,16 @@ export default function dashboardStateReducer(state = {}, action) {
       };
     },
     [SET_DIRECT_PATH]() {
-      return {
+      const newState = {
         ...state,
-        // change of direct path (tabs) will reset current mounted tab
-        mountedTab: null,
         directPathToChild: action.path,
         directPathLastUpdated: Date.now(),
       };
+      // change of direct path (tabs) will reset current mounted tab
+      // cannot just set mountedTab to null,
+      // as that is used when transitioning between tabs.
+      delete newState.mountedTab;
+      return newState;
     },
     [SET_MOUNTED_TAB]() {
       // set current mounted tab after tab is really mounted to DOM