message: fix(dropdown): fix dropup position with container body (bs3)
diff: @@ -7,6 +7,7 @@ import {
  Renderer2
  } from '@angular/core';
  import { BsDropdownState } from './bs-dropdown.state';
  +import { isBs3 } from '../utils/theme-provider';
  @Component({
  selector: 'bs-dropdown-container',
  @@ -39,7 +40,7 @@ export class BsDropdownContainerComponent implements OnDestroy {
  this._subscription = _state.isOpenChange.subscribe((value: boolean) => {
  this.isOpen = value;
  const dropdown = _element.nativeElement.querySelector('.dropdown-menu');
  - if (dropdown) {
  + if (dropdown && !isBs3()) {
  this._renderer.addClass(dropdown, 'show');
  if (dropdown.classList.contains('dropdown-menu-right')) {
  this._renderer.setStyle(dropdown, 'left', 'auto');
  