Translations not loaded on first start

Current behavior

I use ngx-translate in an Ionic 4 app. When I deploy the app to a device on the first start the translations are not loaded. If I exit the app and restart it, everthing works fine.

Expected behavior

Translations are loaded on first start of the app.

Minimal reproduction of the problem with instructions

1. Build the Ionic app with initialization of ngx-translate as in the docs
2. Deploy app to a device (Android or iOS)
3. Start the app

Environment

ngx-translate version: 12.1.1
Angular version: 8.2.14

In my app.component.ts I initialize ngx-translate as described in the docs:

constructor(public translate: TranslateService) {
    this.translate.setDefaultLang('de');
    this.translate.use('de').subscribe(
      next => { console.log('Initialized translations') }
    );
}

It seems that the use() method does not work correctly on the first start. The output inside the subscribe does not appear on the first start, but one the second.

Maybe its related to #1162 or #1175

[blumk]

@fortunella I can reproduce this issue in a non-Ionic environment. Using @angular/core and @ngx-translate/core 13.0.0.

Occurs mostly on initial page load. Translations load after reloading window, I guess because *.js bundles are already in cache.

[ajlif]

Any updates here ?