Viewports: Fixed viewport merge code not testing the Minimized flag correctly. (#3118)

imgui.cpp

@@ -10679,7 +10679,11 @@ static bool ImGui::GetWindowAlwaysWantOwnViewport(ImGuiWindow* window)
 static bool ImGui::UpdateTryMergeWindowIntoHostViewport(ImGuiWindow* window, ImGuiViewportP* viewport)
 {
     ImGuiContext& g = *GImGui;
-    if (!(viewport->Flags & (ImGuiViewportFlags_CanHostOtherWindows | ImGuiViewportFlags_Minimized)) || window->Viewport == viewport)
+    if (window->Viewport == viewport)
+        return false;
+    if ((viewport->Flags & ImGuiViewportFlags_CanHostOtherWindows) == 0)
+        return false;
+    if ((viewport->Flags & ImGuiViewportFlags_Minimized) != 0)
         return false;
     if (!viewport->GetMainRect().Contains(window->Rect()))
         return false;