nb-select inside nbPopup auto close when select

[steven274]

Issue type

I'm submitting a ... (check one with "x")

• [x] bug report
• [ ] feature request

Issue description

Current behavior: Popup auto close when select

Expected behavior: Popup should not auto close when select

Steps to reproduce:

Related code:

<button type="button" nbButton status="success" [nbPopover]="popup"><i class="nb-plus"></i></button>

<ng-template #popup>
  <div>
    <form>
      <div class="form-group">
        <nb-select fullWidth [(selected)]="selected" name="selected">
          <nb-option [value]="1">1</nb-option>
          <nb-option [value]="2">2</nb-option>
          <nb-option [value]="3">3</nb-option>
          <nb-option [value]="4">4</nb-option>
        </select>
      </div>
    </form>
  </div>
</ng-template>

Other information:

npm, node, OS, Browser

node: 10.15.3
npm: 6.4.1
OS: Linux
Browser: Chrome

Angular, Nebular

Angular: 8.0.0
Nebular: 4.1.2