diff --git a/imgui.cpp b/imgui.cpp
index 1f39af4..79ba261 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -2135,7 +2135,6 @@
     ParentWindow = NULL;
     RootWindow = NULL;
     RootWindowForTitleBarHighlight = NULL;
-    RootWindowForTabbing = NULL;
     RootWindowForNav = NULL;
 
     NavLastIds[0] = NavLastIds[1] = 0;
@@ -3063,12 +3062,19 @@
     ImGuiWindow* apply_focus_window = NULL;
     bool apply_toggle_layer = false;
 
+    ImGuiWindow* modal_window = GetFrontMostPopupModal();
+    if (modal_window != NULL)
+    {
+        g.NavWindowingTarget = NULL;
+        return;
+    }
+
     bool start_windowing_with_gamepad = !g.NavWindowingTarget && IsNavInputPressed(ImGuiNavInput_Menu, ImGuiInputReadMode_Pressed);
     bool start_windowing_with_keyboard = !g.NavWindowingTarget && g.IO.KeyCtrl && IsKeyPressedMap(ImGuiKey_Tab) && (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard);
     if (start_windowing_with_gamepad || start_windowing_with_keyboard)
         if (ImGuiWindow* window = g.NavWindow ? g.NavWindow : FindWindowNavigable(g.Windows.Size - 1, -INT_MAX, -1))
         {
-            g.NavWindowingTarget = window->RootWindowForTabbing;
+            g.NavWindowingTarget = window;
             g.NavWindowingHighlightTimer = g.NavWindowingHighlightAlpha = 0.0f;
             g.NavWindowingToggleLayer = start_windowing_with_keyboard ? false : true;
             g.NavInputSource = start_windowing_with_keyboard ? ImGuiInputSource_NavKeyboard : ImGuiInputSource_NavGamepad;
@@ -3137,7 +3143,7 @@
     }
 
     // Apply final focus
-    if (apply_focus_window && (g.NavWindow == NULL || apply_focus_window != g.NavWindow->RootWindowForTabbing))
+    if (apply_focus_window && (g.NavWindow == NULL || apply_focus_window != g.NavWindow->RootWindow))
     {
         g.NavDisableHighlight = false;
         g.NavDisableMouseHover = true;
@@ -3813,6 +3819,7 @@
     UpdateMovingWindow();
     UpdateHoveredWindowAndCaptureFlags();
 
+    // Background darkening/whitening
     if (GetFrontMostPopupModal() != NULL)
         g.ModalWindowDarkeningRatio = ImMin(g.ModalWindowDarkeningRatio + g.IO.DeltaTime * 6.0f, 1.0f);
     else
@@ -6181,11 +6188,11 @@
 
         // Initialize
         window->ParentWindow = parent_window;
-        window->RootWindow = window->RootWindowForTitleBarHighlight = window->RootWindowForTabbing = window->RootWindowForNav = window;
+        window->RootWindow = window->RootWindowForTitleBarHighlight = window->RootWindowForNav = window;
         if (parent_window && (flags & ImGuiWindowFlags_ChildWindow) && !window_is_child_tooltip)
             window->RootWindow = parent_window->RootWindow;
         if (parent_window && !(flags & ImGuiWindowFlags_Modal) && (flags & (ImGuiWindowFlags_ChildWindow | ImGuiWindowFlags_Popup)))
-            window->RootWindowForTitleBarHighlight = window->RootWindowForTabbing = parent_window->RootWindowForTitleBarHighlight; // Same value in master branch, will differ for docking
+            window->RootWindowForTitleBarHighlight = parent_window->RootWindowForTitleBarHighlight;
         while (window->RootWindowForNav->Flags & ImGuiWindowFlags_NavFlattened)
             window->RootWindowForNav = window->RootWindowForNav->ParentWindow;
 
@@ -7262,7 +7269,7 @@
 bool ImGui::IsWindowNavFocusable(ImGuiWindow* window)
 {
     ImGuiContext& g = *GImGui;
-    return window->Active && window == window->RootWindowForTabbing && (!(window->Flags & ImGuiWindowFlags_NoNavFocus) || window == g.NavWindow);
+    return window->Active && window == window->RootWindow && (!(window->Flags & ImGuiWindowFlags_NoNavFocus) || window == g.NavWindow);
 }
 
 float ImGui::GetWindowWidth()

diff --git a/imgui.cpp b/imgui.cpp
index 1f39af4..79ba261 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -2135,7 +2135,6 @@
     ParentWindow = NULL;
     RootWindow = NULL;
     RootWindowForTitleBarHighlight = NULL;
-    RootWindowForTabbing = NULL;
     RootWindowForNav = NULL;
 
     NavLastIds[0] = NavLastIds[1] = 0;
@@ -3063,12 +3062,19 @@
     ImGuiWindow* apply_focus_window = NULL;
     bool apply_toggle_layer = false;
 
+    ImGuiWindow* modal_window = GetFrontMostPopupModal();
+    if (modal_window != NULL)
+    {
+        g.NavWindowingTarget = NULL;
+        return;
+    }
+
     bool start_windowing_with_gamepad = !g.NavWindowingTarget && IsNavInputPressed(ImGuiNavInput_Menu, ImGuiInputReadMode_Pressed);
     bool start_windowing_with_keyboard = !g.NavWindowingTarget && g.IO.KeyCtrl && IsKeyPressedMap(ImGuiKey_Tab) && (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard);
     if (start_windowing_with_gamepad || start_windowing_with_keyboard)
         if (ImGuiWindow* window = g.NavWindow ? g.NavWindow : FindWindowNavigable(g.Windows.Size - 1, -INT_MAX, -1))
         {
-            g.NavWindowingTarget = window->RootWindowForTabbing;
+            g.NavWindowingTarget = window;
             g.NavWindowingHighlightTimer = g.NavWindowingHighlightAlpha = 0.0f;
             g.NavWindowingToggleLayer = start_windowing_with_keyboard ? false : true;
             g.NavInputSource = start_windowing_with_keyboard ? ImGuiInputSource_NavKeyboard : ImGuiInputSource_NavGamepad;
@@ -3137,7 +3143,7 @@
     }
 
     // Apply final focus
-    if (apply_focus_window && (g.NavWindow == NULL || apply_focus_window != g.NavWindow->RootWindowForTabbing))
+    if (apply_focus_window && (g.NavWindow == NULL || apply_focus_window != g.NavWindow->RootWindow))
     {
         g.NavDisableHighlight = false;
         g.NavDisableMouseHover = true;
@@ -3813,6 +3819,7 @@
     UpdateMovingWindow();
     UpdateHoveredWindowAndCaptureFlags();
 
+    // Background darkening/whitening
     if (GetFrontMostPopupModal() != NULL)
         g.ModalWindowDarkeningRatio = ImMin(g.ModalWindowDarkeningRatio + g.IO.DeltaTime * 6.0f, 1.0f);
     else
@@ -6181,11 +6188,11 @@
 
         // Initialize
         window->ParentWindow = parent_window;
-        window->RootWindow = window->RootWindowForTitleBarHighlight = window->RootWindowForTabbing = window->RootWindowForNav = window;
+        window->RootWindow = window->RootWindowForTitleBarHighlight = window->RootWindowForNav = window;
         if (parent_window && (flags & ImGuiWindowFlags_ChildWindow) && !window_is_child_tooltip)
             window->RootWindow = parent_window->RootWindow;
         if (parent_window && !(flags & ImGuiWindowFlags_Modal) && (flags & (ImGuiWindowFlags_ChildWindow | ImGuiWindowFlags_Popup)))
-            window->RootWindowForTitleBarHighlight = window->RootWindowForTabbing = parent_window->RootWindowForTitleBarHighlight; // Same value in master branch, will differ for docking
+            window->RootWindowForTitleBarHighlight = parent_window->RootWindowForTitleBarHighlight;
         while (window->RootWindowForNav->Flags & ImGuiWindowFlags_NavFlattened)
             window->RootWindowForNav = window->RootWindowForNav->ParentWindow;
 
@@ -7262,7 +7269,7 @@
 bool ImGui::IsWindowNavFocusable(ImGuiWindow* window)
 {
     ImGuiContext& g = *GImGui;
-    return window->Active && window == window->RootWindowForTabbing && (!(window->Flags & ImGuiWindowFlags_NoNavFocus) || window == g.NavWindow);
+    return window->Active && window == window->RootWindow && (!(window->Flags & ImGuiWindowFlags_NoNavFocus) || window == g.NavWindow);
 }
 
 float ImGui::GetWindowWidth()
diff --git a/imgui_internal.h b/imgui_internal.h
index 6cd259e..b7c7f07 100644
--- a/imgui_internal.h
+++ b/imgui_internal.h
@@ -1002,7 +1002,6 @@
     ImGuiWindow*            ParentWindow;                       // If we are a child _or_ popup window, this is pointing to our parent. Otherwise NULL.
     ImGuiWindow*            RootWindow;                         // Point to ourself or first ancestor that is not a child window.
     ImGuiWindow*            RootWindowForTitleBarHighlight;     // Point to ourself or first ancestor which will display TitleBgActive color when this window is active.
-    ImGuiWindow*            RootWindowForTabbing;               // Point to ourself or first ancestor which can be CTRL-Tabbed into.
     ImGuiWindow*            RootWindowForNav;                   // Point to ourself or first ancestor which doesn't have the NavFlattened flag.
 
     ImGuiWindow*            NavLastChildNavWindow;              // When going to the menu bar, we remember the child window we came from. (This could probably be made implicit if we kept g.Windows sorted by last focused including child window.)