Sentry can suspend incoming crash reports until all required debug information files have been uploaded. This feature is called Reprocessing. It can be configured in Project Settings > Processing Issues. By default, this feature is disabled.
If enabled, crash reports with missing debug files will not be displayed in the issues stream. Instead, you will receive a warning that events cannot be processed until all debug files have been uploaded.
Once an issue is shown in the issues stream, it is no longer processed. Even with enabled reprocessing, new file uploads will not effect such events.
At the moment, this feature only applies to iOS crashes sent with the Cocoa SDK and is not compatible with Symbol Servers.
To learn more about Debug Information Files, please visit the Platform Guide.