Yup, that is true for both Cloud and Self-hosted, it never blocks any executions by any external factors other than the breaker is KNOWN as open. The state sync and the hot path are 2 completely separated flows.
Feel free to take a look at the SDK code if you want to, it's open :) https://github.com/openfuseio/openfuse-sdk-node
Feel free to take a look at the SDK code if you want to, it's open :) https://github.com/openfuseio/openfuse-sdk-node