Random hard crashing potentially relating to IKControls

greetings, i maintain a little virtual reality system known as HAKUREALITY, and have observed many hard crashes occurring at random with other players whenever a VR user is present in the same server.

when the crash occurs, the client immediately closes without log or crash message, which has confused many players.
this occurs regardless of operating system or device, and i highly believe this to originate from IKControls, as the crash does not occur when replication is disabled.

i have been unable to create a minimal reproduction as i’ve been unable to figure out how it’s occurring in the first place, any guess attempts have been unsuccessful.
however, if it helps, it happens often & has affected players in this experience when VR users have been present: ☢️ QS Energy Research Facility - Roblox

i have attached a private diagnostic report with this bug report, it was encountered with my own system, running macOS Sequoia 15.1 Beta 7.

a swift response would be appreciated due to the severe impact, thank you!

A private message is associated with this bug report

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Yeah I’m experiencing the same issues with IKControls; as soon as I enabled IK on Humanoids my game will immediately hard-crash exactly the same without any Errors, Warnings, prompts, etc.

Hopefully @Roblox fixes this soon.

1 Like

Hello, Could you please provide a repro file for this bug so we can investigate. Thanks.

Hi @katsumisoda and @vq9o,

Following up to see if you are still seeing the hard crashes in your experiences. I believe this has been fixed for a while now, but please let us know if you still see crashes and we will keep looking into it. Thank you.