Ion-input not showing when its inside a ion-col and as a item from a ion-list

@chrisbodon You can try to use the ion-item html properties, like item-content, to allow elements aside from labels and inputs inside it:

<ion-list>
      <ion-item>
          <ion-grid item-content>
            <ion-row>
                <ion-col col-3><ion-input type="text" value=""></ion-input></ion-col>
                <ion-col col-3><ion-input type="text" value=""></ion-input></ion-col>
                <ion-col col-3><ion-input type="text" value=""></ion-input></ion-col>
                <ion-col col-3><ion-input type="text" value=""></ion-input></ion-col>
            </ion-row>
          </ion-grid>
      </ion-item>
  </ion-list>

Just place item-content in the element directly inside the ion-item.

You can check in your browser inpector to see if your code is placed inside the ion-item in the generated HTML.

More information about ion-item here.