Ionic 4 horizontal scroll with ngFor

Question

I'm at a loss. I can get horizontal scroll to work fine with just html and css but when i introduce ngFor, it refuses to produce the same effect.. Does anyone have experience with this, or know how to solve the issue?

here is my simple code that does not work:

this example yields a vertical list:

<div class="container" *ngFor="let item of items | async">
        <div class="scroll" scrollX="true">
         <span>{{item.ProjectEvent}}</span>
        </div>
    </div>

And this one yields a wide container that scrolls horizontally

 <div class="container" >
        <div class="scroll" scrollX="true">
            <span>item1</span>
            <span>item2</span>
            <span>item3</span>
            <span>item4</span>
            <span>item5</span>
            <span>item6</span>
            <span>item7</span>
            <span>item8</span>
            <span>item9</span>
        </div>
    </div>

And the same css for both:

.container {
  width: 100px;
  background-color: green;
  overflow: hidden; 
  white-space: nowrap;
  ::-webkit-scrollbar {
    display: none;
  }
  .scroll {
    overflow: auto;
  }
}

Explain that one to me Mr. Spock!

Thanks for the help in advance!

Dependencies for good measure:

"dependencies": {
    "@angular/common": "^7.1.4",
    "@angular/core": "^7.1.4",
    "@angular/fire": "^5.1.1",
    "@angular/forms": "^7.1.4",
    "@angular/http": "^7.1.4",
    "@angular/platform-browser": "^7.1.4",
    "@angular/platform-browser-dynamic": "^7.1.4",
    "@angular/router": "^7.1.4",
    "@ionic-native/core": "5.0.0-beta.21",
    "@ionic-native/splash-screen": "5.0.0-beta.21",
    "@ionic-native/status-bar": "5.0.0-beta.21",
    "@ionic/angular": "4.0.0",
    "@ionic/pro": "2.0.4",
    "core-js": "^2.5.4",
    "firebase": "^5.8.0",
    "ngx-navigation-with-data": "^1.0.2",
    "rxjs": "~6.3.3",
    "zone.js": "~0.8.26"
  },

Answer 1

Try using the directive on the actual element that needs to get replicated:

<div class="container">
    <div class="scroll" scrollX="true">
        <span *ngFor="let item of items | async">{{item.ProjectEvent}}</span>
    </div>
</div>