message: fix(dropdown): add small delay for animation, to avoid issue with ngFor
diff: @@ -343,8 +343,10 @@ export class BsDropdownDirective implements OnInit, OnDestroy {
  private playAnimation(): void {
  if (this._state.isAnimated && this._inlinedMenu) {
  + setTimeout(() => {
  this._factoryDropDownAnimation.create(this._inlinedMenu.rootNodes[0])
  .play();
  + });
  }
  }
  