Nav: fixed Ctrl+Tab window appearing as empty when the sole active and focused window has the ImGuiWindowFlags_NoNavFocus flag. (#8914)

docs/CHANGELOG.txt

@@ -50,7 +50,9 @@ Other Changes:
 - Clipper, Tables: added ImGuiListClipperFlags_NoSetTableRowCounters as a way to
   disable the assumption that 1 clipper item == 1 table row, which breaks when
   e.g. using clipper with ItemsHeight=1 in order to clip in pixel units. (#8886)
-- Fixed Bullet() fixed tesselation amount which looked out of place in very large sizes.
+- Nav: fixed Ctrl+Tab window appearing as empty when the sole active and focused
+  window has the ImGuiWindowFlags_NoNavFocus flag. (#8914)
+- Bullet: fixed tesselation amount which looked out of place in very large sizes.
 - InputText: allow passing an empty string with buf_size==0. (#8907)
   In theory the buffer size should always account for a zero-terminator, but idioms
   such as using InputTextMultiline() with ImGuiInputTextFlags_ReadOnly to display

imgui.cpp

@@ -14253,7 +14253,7 @@ static void ImGui::NavUpdateWindowing()
         g.NavWindowingInputSource = g.NavInputSource = ImGuiInputSource_Gamepad;
     }
     if (start_windowing_with_gamepad || start_windowing_with_keyboard)
-        if (ImGuiWindow* window = g.NavWindow ? g.NavWindow : FindWindowNavFocusable(g.WindowsFocusOrder.Size - 1, -INT_MAX, -1))
+        if (ImGuiWindow* window = (g.NavWindow && IsWindowNavFocusable(g.NavWindow)) ? g.NavWindow : FindWindowNavFocusable(g.WindowsFocusOrder.Size - 1, -INT_MAX, -1))
         {
             if (start_windowing_with_keyboard || g.ConfigNavWindowingWithGamepad)
                 g.NavWindowingTarget = g.NavWindowingTargetAnim = window->RootWindow; // Current location