MenuItem, Selectable: Fixed disabled widget interfering with navigation (fix c2db7f63 in 1.67).

docs/CHANGELOG.txt

@@ -60,6 +60,7 @@ Other Changes:
   when manipulating the scrollbar of a multi-line input text.
 - ColorPicker: Fixed a bug/assertion when displaying a color picker in a collapsed window
   while dragging its title bar. (#2389)
+- MenuItem, Selectable: Fixed disabled widget interfering with navigation (fix c2db7f63 in 1.67).
 - TabBar: Fixed a crash when using BeginTabBar() recursively (didn't affect docking). (#2371)
 - TabBar: Added extra mis-usage error recovery. Past the assert, common mis-usage don't lead to
   hard crashes any more, facilitating integration with scripting languages. (#1651)

imgui_widgets.cpp

@@ -5179,7 +5179,20 @@ bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags fl
     bb.Min.y -= spacing_U;
     bb.Max.x += spacing_R;
     bb.Max.y += spacing_D;
-    if (!ItemAdd(bb, id))
+
+    bool item_add;
+    if (flags & ImGuiSelectableFlags_Disabled)
+    {
+        ImGuiItemFlags backup_item_flags = window->DC.ItemFlags;
+        window->DC.ItemFlags |= ImGuiItemFlags_NoNav | ImGuiItemFlags_NoNavDefaultFocus;
+        item_add = ItemAdd(bb, id);
+        window->DC.ItemFlags = backup_item_flags;
+    }
+    else
+    {
+        item_add = ItemAdd(bb, id);
+    }        
+    if (!item_add)
     {
         if ((flags & ImGuiSelectableFlags_SpanAllColumns) && window->DC.ColumnsSet)
             PushColumnClipRect();