diff --git a/imgui.cpp b/imgui.cpp
index a99c3743..a84cd970 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -5520,7 +5520,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
                     ImRect resize_rect(corner, corner + grip.InnerDir * grip_hover_size);
                     resize_rect.FixInverted();
                     bool hovered, held;
-                    ButtonBehavior(resize_rect, window->GetID((void*)resize_grip_n), &hovered, &held, ImGuiButtonFlags_NoNavFocus);
+                    ButtonBehavior(resize_rect, window->GetID((void*)resize_grip_n), &hovered, &held, ImGuiButtonFlags_FlattenChilds|ImGuiButtonFlags_NoNavFocus);
                     if (hovered || held)
                         g.MouseCursor = (resize_grip_n & 1) ? ImGuiMouseCursor_ResizeNESW : ImGuiMouseCursor_ResizeNWSE;