ClickTrace — uGUI Click & Raycast Diagnostics

A button looks clickable, but nothing happens. ClickTrace shows the evidence at the point you test.

Select a uGUI Button, enter a point in Game View screen pixels, and inspect Unity's EventSystem.RaycastAll order. ClickTrace separates the graphic that received the raycast from the predicted IPointerClickHandler receiver, so a child label is not mistaken for a blocker. Findings cover hierarchy, masking, CanvasGroup, raycast, navigation, and input problems.

In Play Mode, Live Capture records observed input edges. An optional Button.onClick observer records UnityEvent invocations separately. A read-only probe does not send a click to the game. Suggested one-property changes are previewed first; Edit Mode application supports Undo, while Play Mode trials can be reverted.

Included: English and Russian Editor UI, raycast stack and history, JSON and HTML evidence reports, editable C# source, offline documentation, and six controlled uGUI sample scenes.

Scope: uGUI only; UI Toolkit is not diagnosed. A predicted route is evidence, not proof that game logic ran. Custom input modules and unusual raycast filters may require manual investigation.