1. Run the attached QML file (with the js)
2. Click the "Click here" button. It launches a workerscript to remove all items in the listModel and re-add them all back. Animations are enabled on the removes and adds.
3. Verify that the animations do work now.
4. flick the list around and while the list is scrolling click the "click here" button

BUG:
Black screen appears, you won't be able to see the list anymore. There's no way to get all the items back no matter how many times you click the "click here" button. Sometimes you can get the first item back but that's it.