cropperjs@1.5.8 doesn't pinch zoom-out on device

[eun-choi]

Describe the bug
cropperjs@1.5.8 doesn't pinch zoom-out on device.
Only the pinch zoom-in function works.
In version 1.5.7, both pinch zoom-in and zoom-out worked fine.

To Reproduce
Steps to reproduce the behavior:

1. npm i cropperjs@1.5.8
2. run on iOS/Android device
3. try pinch zoom-out
4. function fail
5. npm i cropperjs@1.5.7
6. run on iOS/Android device
7. try pinch zoom-out
8. works fine

or

1. run on iOS/Android device
2. run Safari/Chrome app
3. go to https://fengyuanchen.github.io/cropperjs/
4. try pinch zoom-out
5. function fail