This is interesting information. We had been planning to drop Fastclick in the next version of AppStudio. Fastclick themselves say:
Note: 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.
It looks like this specific issue is a bug in WebKit. It has been fixed there, but there is a lag before these fixes make into Mobile Safari. Apple currently has MS 11.4 in beta - it could be fixed any day or we may have to wait.
You can download a version of FastClick with the workaround solution from the link in Nate’s email. If you save that into c:/Program Files (x86)/NSB AppStudio/nsb/library, AppStudio will use the amended file.
Next build of AppStudio, we will check if Safari has the fix. If not, we’ll include this version of Fastclick.