Open $ionicActionSheet from within ion-nav-buttons instantly closes

I have the following scenario (where showAttributeTypes opens an actionSheet):

<ion-nav-buttons side="right">
    <button ng-click="showAttributeTypes()" class="button button-clear"><i class="icon ion-plus-round"></i></button>
</ion-nav-buttons>

In the iPad simulator and on the iPad device this forces the actionSheet to slide in and instantly slide out again.

The actionSheet works perfect if it is called from outside of the navbar.
Seems like the click event may be fired twice or something like that from within the navbar?

Hi,
I encountered the same issue here, I guess this was because the button got clicked twice. Or perhaps a back button behaviour was triggered improperly.
Any ideas, please let me know, thanks a lot.

I have the same issue, anyone found a solution for this?