Flash Not Showing

[bmshubham]

Hi there,
My current ionic version is 4.1.0, and working on ionic 3 using angular and cordova.
I've made a new ionic package to test this.
I've installed this plugin and added the module in _app.module.ts_ also, imported service in my home.ts file. also added <flash-messages></flash-messages> in app.html file.

when this.flashMessageService.show('Some Text'); is firing it makes a div with class="alert flash-message alert-success" and some other ng-* attributes, I can see this in inspect element,
but the issue is message is not displaying in front/app.