XR Space discovery is failing on Quest 3 devices with error code -2 returned from queryCompleteEvent->result on XR_TYPE_EVENT_DATA_SPACE_DISCOVERY_COMPLETE_META. This issue occurs frequently on devices deployed via Horizon Managed Services (HMS) with OS version 203 (5208318.3200.520) and Unity Editor 6.3.11f1, despite the USE_SCENE permission being granted and space setup being complete. The issue is less common or absent on developer devices not connected to HMS, suggesting an HMS-specific environmental factor is affecting space discovery functionality.