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There is an issue I have discovered with Ng-Idle, Material 6 and Angular 6
"@ng-idle/core": "^6.0.0-beta.3"
"@ng-idle/keepalive": "^6.0.0-beta.3"
"@angular/core": "^6.1.9"
"@angular/cdk": "^6.4.7"
"@angular/material": "^6.4.7"
When ng-idle executes onIdleEnd the currently displayed mat-dialog isn't closing when invoked. See lines 37 - 43 in app.component.ts file.