PerformanceObserver can't go in callback

[rockyxia]

this.observers.measure = new PerformanceObserver(function (e) {
var t = e.getEntries()[0].startTime;
requestAnimationFrame(function () {
r && n.stats.updateRenderings(t), (r = !0);
});
});
this.observers.measure.observe({
type: "measure",
buffered: !0,
});

PerformanceObserver callback can't goin, Is it a known problem？

[rockyxia]

performance.measure No trigger