Sometimes this happens when you include both accounts-ui and accounts-ui-bootstrap-3 packages in your App. The standard package accounts-ui classes tends to overrides the CSS classes of bootstrap-3 styled “accounts-ui”. Just remove the standard package from your App by typing the following command in terminal:

[cc lang=”javascript”]

meteor remove accounts-ui

[/cc]

And you will see you {{loginButtons}} get appear in the browser.

This may also happen when you include both bootstrap and bootstrap-3 packages in your App which may break the CSS. So by removing bootstrap everything works fine.

[cc lang=”javascript”]

meteor remove bootstrap

[/cc]