Crash from WorldRoot::StepPhysics

In the given file & script (ServerScriptService.StepPhysicsCrash), running WorldModel:StepPhysics causes an immediate studio crash.

Repro file:
PluginCrashRepro.rbxl (55.1 KB)

Repro steps:

  • Under ‘ServerScriptService’, save ‘StepPhysicsCrash’ as a local plugin
  • When the plugin has loaded, the plugin button ‘run’ should appear, which runs the reproduction code on click

Beta features enabled:

  • Avatar joint upgrade
  • Studio solid modelling improvements

System info:
–Mac M4 chip
–MacOS Sequoia 15.5

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