Ionic reorder poor responsiveness on Android phone

I am having some serious issues with the built-in reorder directive on an ion-list. It works OK when I serve up the app, but on an emulator or on my Android phone, it breaks. Trying to drag the item scrolls the whole screen, rather than the item.

I’ve replicated the issue in a codepen. It works on the codepen website, but copying down the code and running it on my phone recreates the issue.

Can’t figure out what to do to fix it. Any help would be greatly appreciated!