UUM-158185

Fixed in 6000.7.0b8

Mentioned in 6 Unity 6 release notes.

First fixed in 6000.7.0b8 (Nov 5, 2026).

All (18)Unity 7 (12)Unity 6 (6)
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VersionSectionRiskImpactNote
6000.7.0b8Improvements
Physics 2D
ImprovementImproved the performance of contact solving and of finding new contact pairs. (UUM-158185) First seen in 6000.7.0b7.
6000.7.0b8API Changes
Physics 2D
API changeAdded: Added "PhysicsHingeJoint.currentSpeed", the speed body B is currently turning relative to body A. (UUM-158185) First seen in 6000.7.0b7.
6000.7.0b8Changes
Physics 2D
ChangeA contact cancelled by a pre-contact callback is now updated every simulation step, so the callback is called every step while the shapes stay in contact. (UUM-158185) First seen in 6000.7.0b7.
6000.7.0b8Changes
Physics 2D
ChangeContact and hinge joint solving were restructured, so simulation results can differ slightly from previous versions. (UUM-158185) First seen in 6000.7.0b7.
6000.7.0b8Changes
Physics 2D
ChangePolygons created from vertices now keep vertices that are much closer together before welding them, and "PhysicsWorld.minPolygonEdgeLength" now reports this smaller distance. (UUM-158185) First seen in 6000.7.0b7.
6000.7.0b8Fixes
Physics 2D
FixFixed a joint between two kinematic bodies being handled incorrectly when either body was disabled and enabled again. (UUM-158185) First seen in 6000.7.0b7.

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