Hi,
There is a double event with Draggable’s onClick event in iOS 8.4.1 (iPhone or iPad).
In Safari, it seems to also trigger the iOS keyboard...
On Chrome the double event bug is present, but the iOS keyboard is not popping up.
I specified the OS version, because I don’t think it did that before I updated my iOS the other day, and now it does what I described above with either GSAP 1.18 or 1.17.
EDIT: It turns out the bug is also present in iOS 6.1.6 (the latest of 6.x), and this one was not updated for a very, very long time... The only difference is the keyboard is not popping in Safari (iPhone 3GS ... ... ! )