Bug Reports

The Physbone gravity works differently when being toggeled on/off in some worlds- while in some it's perfectly smoothed, in some other it's being delayed by a couple of seconds or it jumps very harshly I can't pinpoint a world related origin of the issue- seems to be both in Live and current Beta Build and the worlds I've tested, were updated pretty closely to each other. TL;DR: It must be gravity set higher than 0- for some reason it won't get smoothed in some worlds. How to reproduce: Create two empty GameObjects and a cube (Remove colliders!). GameObject 1/GameObject 2/Cube (Stretched long for better visuals) Put the cube in Ignore Transforms Put the Physbone on your avatar hand and rotate it until it has the same direction as the index finger. Physbone Settings on GameObject 1: Version 1.1 (1.0 also doesn't work) Integration Type: Simplified Pull: 0.1 Spring: 0.2 Gravity: 0.9 Collision 0.02 No Limits Allow Grabbing: True Allow Posing: False Snap To Hand: True IsAnimated: False ResetWhenDisabled: False Add animations to toggle the active state of VRCPhysbone (I've tested it in WD Off with Physbone being off on start) Go into any of the mentioned worlds and having an animation that toggles the enabled status of the GameObject 1 VRCPhysbone on/off Buggy: LPD Station (Updated 03/11/2025), Just B Club (Updated 03/12/2025) Working: Avatar Testing Chamber (Updated 02/14/2025), Sovren's Chill home (Updated 03/15/2025) Further Tests I've done: With or without Physbone limit doesn't matter It being attached to a parent constraint as an avatar GameObject child or not (parented directly to the hand) is not changing anything IsAnimated and ResetWhenDisabled doesn't matter whether it's on/off It must be gravity set higher than 0- for some reason it won't get smoothed in some worlds.

As per title Reproduction Steps: Enable Logging for U# Attempt to log anything from Vrchat using the Debug.Log function in a world While the log entry will exist in logs, no log will be detected by U# as the format for the logs is not what was anticipated when u# was built. I recommend upgrading U# to the latest available version as it is significant out of date https://github.com/MerlinVR/UdonSharp/releases , but if not, maintaining the tool so it can properly catch logging would be useful for all world developers. I agree with VRC that reverting the logging back to double spaced is not ideal, so I recommend fixing the tool

Unity fbx details option 'keep quads' multiplies sdk triangles by 3. Reproduce by having a fully quads model, single submesh, and applying the keep quads option. After upload, the incorrect triangle count is multiplied by 3.

VRC SDK version: 3.7.3 Set PB - enable Is Animated Move the Bones set in PB with animation Make another object follow the PB bones with Constraint Combating all of these 1 to 3 will cause the Constraint to not work properly. This issue did not address with VRC SDK versions 3.7.2 and below. -Japanese- VRC SDK version: 3.7.3 Set pb - IS Animated to enable Move the bones set in PB with an animation Use Constraint to make the PB bone follow another object If all of these 1 to 3 are combined, Constraint will not work properly. This issue did not occur with VRC SDK versions 3.7.2 and earlier.

SDK issue that occurred after VR Chat Release Version 2025.1.1. It is ongoing so far. VRC Postion Constraint Parent's Postion Included has a problem that does not work when used with PhysBone. We provide you with the data.

So, when I open my VRChat and AS soon it loads into a world. This error noise plays and it doesn't let me into my world. I don't know what's my build number is so, it's blank sadly...

Have an avatar with a working chair Avatar cull them via amount chair component completely works, even if the avatar has it 'hidden' or 'turned off', the avatar cull seems to bring it back to its original state and doesn't turn it off for avatar culling

While idling in a world for a few hours everyone in the instance slowly started to crash out one-by-one. Checking our system specs we realized our VRAM was slowly filling up, followed by system RAM, followed by pagefile. The world in question had a row of 7 image loaders that would cycle through images on a timer, so my immediate suspicion is that it's not deallocating memory properly. Turning off "Allow Untrusted URLs" causes memory usage to stop climbing .

Seems like on avatars uploaded after the newest update that use aim constraints flip the aim constraint up vector on the Y axis 180 degrees. This basically breaks aim constraints that need a specific up direction. This issue is NOT present in unity, and only happens ingame after uploading the avatar. In these images are 3 aim constraints (with very slight setting variations) all pointing towards the floor at a point, the L faces upwards in unity. Ingame they all flip downwards instead.

When using a TextMeshPro InputField in the world space, disabling Interactable to prevent editing does not work as expected, and the field remains editable.