Angular Custom Elements & Angular 8 Material: MatDialog and MatMenu not working

I am using angular custom elements to build an application in which a MatDialog is part of the custom element. I have a MatMenu in the host application as well. Problem is, when I open the mat-dialog on page load and then open the mat-menu, the mat-dialog is not working afterwards, otherwise if I open the menu first and then the mat-dialog, then the menu doesn’t work anymore.

You can find the stackblitz at : https://stackblitz.com/edit/angular-nr58ab-tbu38h

I have added the main.js code of the MatDialog application in the index.html itself. The main.js was generated after building the app with ngx-build-plus in prod mode with output-hashing none and single-bundle true.

The MatDialog app code is like this:

app.module.ts

import { BrowserModule } from "@angular/platform-browser";
import { BrowserAnimationsModule } from "@angular/platform-browser/animations";

import { NgModule, Injector } from "@angular/core";

import { AppRoutingModule } from "./app-routing.module";
import { AppComponent } from "./app.component";
import { createCustomElement } from "@angular/elements";

import { MatDialogModule, MatButtonModule } from "@angular/material";


@NgModule({
  declarations: [AppComponent],
  imports: [
    BrowserModule,
    AppRoutingModule,
    MatDialogModule,
    BrowserAnimationsModule,
    MatButtonModule
  ],
  providers: [],
  bootstrap: [AppComponent],
  entryComponents: [AppComponent]
})
export class AppModule {
  constructor(private injector: Injector) {
    const myCustomElement = createCustomElement(AppComponent, {
      injector: this.injector
    });
    customElements.define("app-test-data", myCustomElement);
  }
  ngDoBootstrap() {}
}

app.component.ts

import { Component, Input, TemplateRef } from "@angular/core";
import { MatDialog } from "@angular/material";

@Component({
  selector: "app-root",
  templateUrl: "./app.component.html",
  styleUrls: ["./app.component.css"]
})
export class AppComponent {
  constructor(private dialog: MatDialog) {}
  openModal(temp: TemplateRef<any>) {
    this.dialog.open(temp, { width: "100px", height: "100px" });
  }
}

and the app.component.html

<button mat-raised-button (click)="openModal(modal)">Open</button>

<ng-template #modal>
  <mat-dialog-content>
    Hello
  </mat-dialog-content>
</ng-template>

This is the app I have built and put inside the index.html of the app in the stackblitz.

I am stuck with this for some time now, I have tried running the dialog.open() inside NgZone.run() also, but no luck there either. Thanks.

Angular Setup:

Angular CLI: 8.3.21 Node: 13.6.0 OS: win32 x64 Angular: 8.2.14 … animations, common, compiler, compiler-cli, core, elements … forms, language-service, platform-browser … platform-browser-dynamic, router

Package Version

@angular-devkit/architect 0.803.21 @angular-devkit/build-angular 0.803.21 @angular-devkit/build-optimizer 0.803.21 @angular-devkit/build-webpack 0.803.21 @angular-devkit/core 8.3.21 @angular-devkit/schematics 8.3.21 @angular/cdk 8.2.3 @angular/cli 8.3.21 @angular/material 8.2.3 @ngtools/webpack 8.3.21 @schematics/angular 8.3.21 @schematics/update 0.803.21 rxjs 6.4.0 typescript 3.5.3 webpack 4.39.2

[yash0412]

This seems like an issue with Angular Material that should be transferred to https://github.com/angular/components/issues?

FYI, Angular Components has an angular-elements label for issues that are specific to Angular Elements.

A number of Angular Element and Web Component fixes have gone into Angular Material 9.0.0-rc.7. Is it possible for your to try with the latest RCs of Angular, CLI, and Components?

Hey, thanks for the suggestion. I tried by updating @angular/cli and @angular/material to 9.0.0-rc.7, still no luck, the issue persists.

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