Unity Issue Tracker - LowLevel 2D Physics Object Callback Targets use MonoBehaviour rather than System.Object

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Fixed

Fixed in 6000.3.0b7, 6000.4.0a3

Votes

0

Found in

6000.3.0b5

6000.4.0a3

Issue ID

UUM-121496

Regression

No

LowLevel 2D Physics Object Callback Targets use MonoBehaviour rather than System.Object

Oct 08, 2025

Callback targets currently restricted to using the `MonoBehaviour` type however this should in-fact be `System.Object` which doesn't artificially restrict use-cases to user scripts.

See: [https://docs.unity3d.com/6000.3/Documentation/ScriptReference/30_search.html?q=callbacktarget]

Discussions: https://discussions.unity.com/t/is-it-possible-to-register-low-level-2d-physics-callbacks-without-monobehaviour/1688725

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