Using the fastclick package will mean that
select's will stop working on Chrome mobile.
You can read more here:
I just spent hours trying to figure out why selects haven’t been working on my site, and finally found out that this package was the issue.
Also you probably don’t want to use it since:
As of late 2015 most mobile browsers - notably Chrome and Safari - no longer have a 300ms touch delay, so fastclick offers no benefit on newer browsers, and risks introducing bugs into your application. Consider carefully whether you really need to use it.