I tried it with my Meteor app but could not get dropdowns in the nav bar to work properly. When clicking on a dropdown, instead of expanding the list of items, it just tries to follow the URL in the href attribute.
Without Meteor, dropdowns in the nav bar work fine. So could there be something conflicting with Meteor itself?
In my case it said only that Tether variable wasn`t available.
It turned out to be a problem with imports and I have already solved this: I created file with this code
import Popper from 'popper.js';
window.Popper = Popper;
You might need to adjust your jQuery version in /user/me/meteor_projects/mySuperSecretApp/package.json to like 1.9, or 2.3, or whatever. Big differences and problems created with this file…