The calls AddOnSpawnedHandler and AddOnDespawnedHandler were removed from the SpawnableEntitiesInterface. These functions will eventually be called from multiple threads and AZ::Event currently doesn't have a thread-safe version to support this. There's also a performance concern as these callbacks are called for each individual (de)spawn requests which can lead to multiple handlers being called without information that's relevant to the callback. It would be better to batch up all (de)spawn requests per ProcessQueue call and only have a single event do a single signal. Since both events are currently not being used they have been removed for now, but can be introduced -with the previously mentioned concerns in mind- when needed.
AMZN-koppersr
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