**Describe the bug** There's no animation when dragging items, although they do appear in their new location. **To Reproduce** Steps to reproduce the behavior: 1. With firefox 118.0.2 go to https://jsbin.com/xecihez/edit?html,js,output (borrowed from other issue), or any example on https://sortablejs.github.io/Sortable/ 2. Click on any item and try to drag it. 3. View console for error message: "Error in parsing value for 'will-change'" **Expected behavior** The dragged item to follow the mouse cursor, as in Chrome. **Information** - Tested with Firefox 118.0.2 (64-bit) on Linux. - Sortable 1.14.0 and master branch. Potentially relevant pull request: https://github.com/SortableJS/Sortable/pull/2152