[bug] Firefox: "Error in parsing value for ‘will-change’. Declaration dropped."

[Swarchal]

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:
#2152

[Swarchal]

Now seems to be working with Firefox 119.0.

Still get a warning "Error in parsing value for ‘will-change’. Declaration dropped.", but the animation is working.

[VenaMaybe]

I'm also getting this error and was wondering if you or anyone else found out why? Everything works fine, I'm just curious I suppose and find it a little annoying. Thanks!

[Toba-bonjour]

Same issue. I did replace all the will-change values with 'transform' and everything seems to work fine with no more warning flags in the Firefox console.

[WoofGrrrr]

So THAT's where the message is coming from... I'm seeing it using Thunderbird 128.8.1 using the Identity Chooser Extension. It seems to be using 1.15.0