physbones
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WubTheCaptain
StormRel
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Can you provide any avatar ID's that are experiencing this issue?
Is there any repro steps?
Bib_Bob
I have heard this from somebody else and I cannot test it myself until I get home but people say it might be the bubble gun item from the VRC+ summer bundle, I will let you guys know once I test it in a couple hours.
huyue
It seems that not just the physbones scripts, but also parent and position constraints, and triggers, are all breaking.
When this instance is affected, the script still does not work properly after rejoining the instance . You must recreate a new instance or join another unaffected instance.
blue mushroom
Facing the same problem, from logs it seems to happen after it triggered a NullReferenceException, restarting vrchat seems to fix it for awhile.
Seems to happen randomly when someone joins the world?
Log excerpt:
2025.07.25 18:18:35 Debug - [Behaviour] Avatar is Ready, Initializing
2025.07.25 18:18:35 Debug - Measure Human Avatar Avatar isRemeasure:False
2025.07.25 18:18:35 Debug - [Behaviour] Initialize ThreePoint Avatar VRCPlayer[Remote] 40 False 8
2025.07.25 18:18:41 Debug - Grabbing - Chain:10561329667512658303 Bone:11
2025.07.25 18:18:49 Debug - Grabbing - Chain:10705447054611769727 Bone:2
2025.07.25 18:19:10 Error - Object reference not set to an instance of an object.
System.NullReferenceException: Object reference not set to an instance of an object.
at VRC.Dynamics.PhysBoneManager.OutputFullDebug () [0x00000] in <00000000000000000000000000000000>:0
at VRC.Dynamics.PhysBoneManager.ScheduleExecutionJob (Unity.Jobs.JobHandle dependsOn) [0x00000] in <00000000000000000000000000000000>:0
at VRC.Dynamics.VRCAvatarDynamicsScheduler.PreScheduleAvatarDynamics (System.Boolean finalizeImmediately) [0x00000] in <00000000000000000000000000000000>:0
2025.07.25 18:19:10 Error - Object reference not set to an instance of an object.
System.NullReferenceException: Object reference not set to an instance of an object.
at VRC.Dynamics.PhysBoneManager.OutputFullDebug () [0x00000] in <00000000000000000000000000000000>:0
at VRC.Dynamics.PhysBoneManager.ScheduleExecutionJob (Unity.Jobs.JobHandle dependsOn) [0x00000] in <00000000000000000000000000000000>:0
at VRC.Dynamics.VRCAvatarDynamicsScheduler.PreScheduleAvatarDynamics (System.Boolean finalizeImmediately) [0x00000] in <00000000000000000000000000000000>:0
...and many more same, repeating NullReferenceException filling up the log.
WubTheCaptain
A player leaving the world seems to have caused that too in this other Canny thread: https://feedback.vrchat.com/bug-reports/p/physbones-freeze-after-a-short-time
NikoNight
My bones and such are also borked. Hopefully they fix this..