Bug Reports

Open VRChat and load a reasonably complex world Example: An old Neon Divide map that hasn't been updated in 2 years (This also occurs with more modern maps, but this map's performance is so bad it's a useful test case) https://vrchat.com/home/world/wrld_9c4d7b7c-4ada-4df3-b4ce-de03cbd3c582/info Stand somewhere in the map, and watch performance degrade sharply over a few minutes This seems to be a CPU issue, CPU usage increases over time On some hardware configurations, performance may jump back up again and then start degrading. Something to do with threads getting overloaded and new ones being spun up

Regardless of the locked portal dropping option, dropping Group+ sometimes doesn't show up to other people at all if they aren't in the group or, possibly, on the portal dropper's friend list.

Trying to load any YouTube video in any world that uses UnityVideoPlayer fails with VideoError: [youtube] <video-id>: Requested format is not available. Use --list-formats for a list of available formats A workaround for now is to use AVPro instead which still works.

I have an Enlighten RTGI setup with an emissive quad on the MirrorReflection layer so that it is not visible to the player. To also hide this quad from personal mirrors, facecams, and cameras, I'm using the VRChat provided shader globals _VRChatCameraMode and VRChatMirrorMode and testing whether they are greater than zero. I found that when I open my stream cam in game, all lighting effect disappear in the main VR game view. Somehow the _VRChatCameraMode is greater than zero in the main camera and I don't believe this is intended. I tested the following scenarios: Desktop - Photo camera: works fine - Stream camera (spout off): works fine - Stream camera (spout on): works fine VR - Photo camera: works fine - Stream camera (spout off): broken! ******* - Stream camera (spout on): works fine Seems like a bug that it is broken only with Spout off and only in VR. There is also a possibility that this is a bug with the MirrorReflection layer, but I haven't created an isolated test scenario to confirm. Code I'm using in a surface shader to reproduce: if(_VRChatCameraMode > 0 || _VRChatMirrorMode > 0) { clip( -1.0 ); }

A considerable amount of playback failures in VRChat is reported by players in Japan, within the week. Some claimed to resolve the problem by either disabling IPv6, or using a proxy service e.g. Cloudflare WARP. Essentially people are being banned as a bot using yt-dlp via VRChat. I wonder if VRChat can allow players to pass certain arguements to yt-dlp to provide their cookies (--cookies) or disable IPv6 (-4) Because to my observation, it does not work even if you create yt-dlp.conf in %userprofile% or the same folder with the yt-dlp.exe installation under VRChat.

(Translation software is used for this report) I frequently get timeouts when logging in and entering my home world and when trying to enter a world where my friends are. Reboot PC, restart LAN, update graphics board drivers, switch from IPv6 to IPv4, reinstall game itself. I have tried almost everything I can try, but it is still occurring. Apparently this problem is occurring to more than just me.

Issue: When using a Text Mesh Pro Input Field the "On End Edit" event does not fire in client, in client sim however it does. This is even weirder to me as the VRC URL Input Field does fire the "On End Edit" event, even in client. Expected Behaviour: "On End Edit" on a Text Mesh Pro Input Field should fire in client.

Open VRChat. Go to any world with any video player. Have someone enter a Youtube video URL. Get playback error. The error looks like this (more in the attached log): 2025.01.22 23:57:56 Log - [AVProVideo] Opening https://www.youtube.com/watch?v=d8OPtlBAxLE (offset 0) with API MediaFoundation 2025.01.22 23:57:56 Error - [AVProVideo] Error: Loading failed. File not found, codec not supported, video resolution too high or insufficient system resources. More details: Recently (around the middle/end of December 2024, can't remember an exact date) I started getting an error in all video players when trying to play videos from Youtube. Video links from other sites are working fine. Also, if I create a private Invite instance, the videos are playing fine, but if I join an existing instance where someone is already playing a video, it doesn't work. I can even enter video links and they will play for my friends in the same instance, but not for me. I can play affected links in my web browser just fine, so it's not a region block from youtube or my ISP. What I've already tried: * Clearing VRC cache * Disabling my firewall * Rebooting my router * Disabled vsync in nvidia control panel * Deleting yt-dlp.exe and replacing it with a version from github (by the way, if I feed a youtube link directly to yt-dlp.exe via windows command line, it's able to download video just fine) None of the above helped.

When I upload my model after the update, my particles appear without their texture under the Shapes tab inside the particle system. Instead of displaying the texture as they should, they appear as if no texture was ever applied. I noticed that when I uploaded using "Build & Test Offline," the particles appeared correctly. However, when I uploaded normally to VRChat, the texture was removed, and the particles appeared without it. This issue only started happening after the latest update (2025.1.1). It was not occurring in previous uploads before the update. I checked the patch notes for VRChat, but there was no mention of changes related to the particle system, the SDK, or the upload process. To help illustrate the issue, I will provide images showing: What my particle system looks like in Unity before uploading. What it looks like after uploading. A comparison of the affected particle system property. An example of how the particles appear in Unity when no texture is applied (which is how they look in-game). Keep in mind that everything was working fine before the 2025.1.1 update.

Reopening https://feedback.vrchat.com/bug-reports/p/local-players-dont-cast-shadows-caused-by-lights-in-avatars-on-cameras Expected behavior Objects comprising local players cast shadows in cameras similar to a player's view. Actual behavior Objects comprising local players do not cast shadows on cameras. "Cameras" means both photo camera and Camera components in avatars. Description / How to reproduce 1. Open test world I prepared a world for testing culling behavior: https://vrchat.com/home/world/wrld_8d64c603-280f-4dd9-811e-d1db875676ad This world contains spheres for each layers. (see also: https://feedback.vrchat.com/bug-reports/p/culling-mask-for-lights-in-avatars-modified-unexpectedly ) 2. Switch to the test avatar Switch to the test avatar that has a light with shadow. 3. Check casted shadow In the first-person view, the sphere in PlayerLocal layer is casting shadow. In the camera view, the sphere in MirrorReflection layer should cast shadow but actually not. It is tested with world object for easy observation, but meshes in the local avatar behaves similarly. Environment VRChat build 1392