Certain spatial query APIs not returning any instances

Reproduction Steps
Within the past hour, a portion of raycast and Region3 API calls have stopped working as expected, without an error. This is a game-breaking bug and we are yet to find a definite reproduction for it. From player reports, we have found that the API calls work for some clients and not others, seemingly randomly. Additionally, the API calls seem to randomly fail on individual clients, also without error.

UPDATE 21:38 GMT - From more information gathered, it appears as if this bug is only affecting the client and not the server.

List of known affected APIs so far:

  • FindPartsInRegion3WithWhiteList
  • Workspace:Raycast

Expected Behavior
Affected spatial query APIs should return parts as expected.

Actual Behavior
From what we have gathered so far, the affected spatial query APIs do not return anything. There is no error, they just return no instances.

Issue Area: Engine
Issue Type: Other
Impact: High
Frequency: Often
Date First Experienced: 2022-01-13 09:01:00 (+00:00)


Just to add to this:-

A few of our team members were experiencing this issue in Studio for quite a few days before-hand (with the Region3 calls). I personally didn’t seem to have the issue, but a couple of others did.

This has been happening at least since 08/01/2022 NZDT in Studio. (01/07/2022 PST)

Hopefully that helps some more.