Welcome to the Developer Update for May 8.
Today’s featured world is NSS Space Jam Hub by NSSA.
Announcements
Submissions for VRChat Pride are Open!
This June, we’ll be launching a Pride Parade Hub world – an inclusive space designed to highlight LGBTQ+ creators from across the platform.
But we need your content for it!
Specifically, we need your posters!
We’re looking for Groups that celebrate and support LGBTQ+ members, posters that send a positive message to the LGBTQ+ community, and more!
You can find the guidelines here. Likewise, you can submit your content here.
Submissions close on 12PM PST on May 30, 2025.
We’re Retooling Our Learning Channel
VRChat has a lot of moving parts! This means it can sometimes be complicated for newer users. To help them out, our User Support team is spinning up a new effort to educate users.
A large part of this effort involves retooling our Learning Channel on YouTube to focus on the ins-and-outs of VRChat.
As an example, you can check out our first two videos on Linking and Upgrading your Account and Setting up 2FA.
These videos are aimed at covering a wide variety of topics in a quick, 1-2 minute format that gives folks the information they need.
We’re aiming to work through our most commonly received questions and work down the list until we’ve reliably covered a good chunk of the current user experience.
2025.2.1 Was Released!
Last week, we released 2025.2.1 – bringing a small bio update (including the addition of pronouns!) as well as introducing localization to the mobile client.
You can watch Tupper tell you more about it here:
(Tupper did a great job while I was on vacation! Also, RIP to Sai. Again…)
As always, you can find the full patch notes here.
(There was also a small patch after release – you can find those notes here.)
(…and okay one more aside: there was another patch released moments ago – 2025.2.1p2! You can see more about it here.)
Cool Stuff: Now in SDK Beta!
Last Developer Update, we previewed a few new features for creators, including Udon network events with parameters as well as a few more things exposed to Udon.
You can read about those things here!
These cool new toys are available now to play with in the Open Beta SDK!
Persistence Data Loss on 2025.2.1 - Post Mortem
In the changelog for 2025.2.1p1, the patch released one day after the main update 2025.2.1 went live, we mentioned that there was a bug causing potential data loss in worlds using VRChat’s persistence feature. We want to give a bit more insight into this, as we consider persistence data very important.
Technical Notes
Only Udon Behaviors that had one or more variables of the following types synced (persisted) were affected: VRCUrl, VRCUrl[] and string[] (brackets denoting arrays). If a user attempted to load persistence data on an affected behavior, it would fail to decode and assign default values instead. These would then be re-serialized, overwriting the previous state on our servers.
The serialization format change only existed on 2025.2.1. This means users who updated from 2025.1.3p4 to 2025.2.1p1 directly are unaffected, as is anyone who launched 2025.2.1 but didn’t visit a world that had a behavior using the aforementioned types.
How We’re Trying to Avoid This in the Future
It is our goal to keep persistence data stable and compatible between versions. Our automated and manual tests did not catch this case, but we have identified the regions where we need to improve them.
This breakage slipping through has caused us to re-evaluate some internal priorities, and we will invest more into automated testing and infrastructure for our QA team dedicated to persistence. Additionally, we are looking into better tooling to recover lost data in such cases.
We apologize if your world was affected or you have lost a save state!
Conclusion
That’s it for this week! See you in two weeks on May 22!