Having upgraded our project from 2020.3 to 2021.1 one of the issues we're struggling with is how our mouse over/move etc states no longer work - only clicks. We've tried: - Event System with Input System UI Input Module - PanelRaycaster is successfully raycasting and hitting specific elements but we're getting no psuedo state changes etc. Unsure how to follow this chain in code further. - InputSystemEventSystem (this is what we originally had in 2020.3) now throws an error that UIElementsRuntimeUtility.activeEventSystem is null. - Using the Standalone Input Module and setting our project to use both the new and old input systems - the StandaloneInputModule is just replaced at runtime with the InputSystemUIInputModule component. We required this upgrade due to URP & VFX issues. Any tips on workarounds or if this might be a bug? Many thanks in advance.