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Close #44913 The following case is not handled correctly by `zone.js`. ``` const delayedPromise = new Promise((resolve) => { setTimeout(resolve, 1, 'timeout'); }); new Promise((resolve) => { resolve(delayedPromise); resolve('second call'); }).then(console.log); ``` It should output `timeout`, since the promise is resolved by the 1st resolve, the `second call` should be ignored. So this is a bug that the original implementation not ensure the `resolve` is only called once. PR Close #45283