PickerController doesn't show correctly

Bug Report

Ionic version:

[x] 4.x

Current behavior:

The second time the PickerController shows the options are not showing correctly.

Expected behavior:

It should show always the right options

Steps to reproduce:

Related code:

Other information:

Ionic info:

Ionic:

   ionic (Ionic CLI)             : 4.10.3 (/usr/local/lib/node_modules/ionic)
   Ionic Framework               : @ionic/angular 4.0.2
   @angular-devkit/build-angular : 0.13.4
   @angular-devkit/schematics    : 7.3.4
   @angular/cli                  : 7.3.4
   @ionic/angular-toolkit        : 1.4.0

System:

   NodeJS : v10.15.1 (/usr/local/bin/node)
   npm    : 6.8.0
   OS     : macOS Mojave

[a7md0]

@michaelins

async numberPicker() {
    const picker = await this.pickerCtrl.create({
      buttons: [
        {
          text: 'Cancel',
          role: 'cancel'
        },
        {
          text: 'Confirm',
          handler: (data) => {
            console.log(data.number);
          }
        }
      ],
      columns: [{
        name: 'number',
        options: [
          { text: 'One', value: 1 },
          { text: 'Two', value: 2 },
        ]
      }]
    });

    picker.columns[0].options.forEach(element => {
      delete element.selected;
      delete element.duration;
      delete element.transform;
    });

    picker.present();
  }

[MengLu2016]

it is the problem of changed columns.options with dynamically set options, when click the picker without changing the selectedIndex twice, the columns.options will add three attribute of selected/duration/transform, just delete it. columns.options.forEach(element => { delete element.selected; delete element.duration; delete element.transform; });