User Reporting Fails with "Error performing query" on Meta Quest 2

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Created 3 days ago

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Platform Services > Security

Investigation summary

The issue occurs when attempting to report another user in a multiplayer session on Meta Quest 2, Horizon OS v207, Meta XR Platform SDK 205.0.0, and Unity 6000.5.6f1. The Meta reporting panel opens and displays the target user correctly, but submission fails and the panel closes without invoking the completion callback, resulting in no success, error, or cancellation result being returned. The issue is reproducible bidirectionally between accounts, persists after device restarts, and is also observed in Meta's native system menu Report function. System logs indicate a "Class not found when unmarshalling" and "Failed to parse item platform_result_receiver, returning null" error during the affected flow. Additionally, the people search within the reporting flow cannot find users in the same multiplayer session.