这种情况通常是由于与Angular生命周期钩子有关的问题导致的。可以在ngAfterViewInit钩子中调用初始化菜单的函数来解决此问题。以下是一个示例代码：

import { Component, OnInit, AfterViewInit } from '@angular/core';

@Component({
  selector: 'app-menu',
  templateUrl: './menu.component.html',
  styleUrls: ['./menu.component.css']
})
export class MenuComponent implements OnInit, AfterViewInit {

  items: MenuItem[];
  userRights: boolean[] = [true, false, true]; // example user rights
  extraIcons: MenuItem[] = [ { label: 'Extra Icon 1', icon: 'pi pi-star' }, { label: 'Extra Icon 2', icon: 'pi pi-heart' } ]; // example extra icons

  constructor() { }

  ngOnInit() {
    this.items = [
      { label: 'Menu Item 1', icon: 'pi pi-home', routerLink: ['/home'] },
      { label: 'Menu Item 2', icon: 'pi pi-calendar', routerLink: ['/calendar'] },
      { label: 'Menu Item 3', icon: 'pi pi-users', routerLink: ['/users'], visible: this.userRights[0] },
      { label: 'Menu Item 4', icon: 'pi pi-cog', routerLink: ['/settings'], visible: this.userRights[1] },
      { label: 'Menu Item 5', icon: 'pi pi-file', routerLink: ['/documents'], visible: this.userRights[2] }
    ];
  }

  ngAfterViewInit() {
    // add extra icons based on user rights
    if (this.userRights[0]) {
      this.items.splice(2, 0, ...this.extraIcons);
    }
    if (this.userRights[1]) {
      this.items.splice(4, 0, ...this.extraIcons);
    }
    if (this.userRights[2]) {
      this.items.splice(6, 0, ...this.extraIcons);
    }
  }

}

在此示例代码中，ngOnInit