Previously, UI atoms rendered visually in front of all 3D objects, but clicks were still blocked by the 3D Objects. This was because GraphicsRaycaster still had BlockingObjects set, so clicks behaved as if the UI existed in 3D world space.
This update adds new functionality to also set BlockingObjects to None, so the UI is no longer blocked by 3D objects in the scene. In addition, the original
BlockingObjects setting is saved, so turning "Render in Front" off restores the original behavior for both the canvas (no longer visually in front) and the raycaster (clicks respect 3D space again).
Special thanks to shr!ke for bringing up this issue. His video in the discussion visually shows the problem this update fixes.
