It's a slow sequestered holiday so I downloaded the Arachne version of Cura just to try it, as I had a print with quite a few curved surfaces about ready to print, so I said 'what the heck' and used the new version to slice it.
It's printing now jury is still out on any noticeable difference, but there was one thing I immediately noticed when preparing the model.
On the Print Settings to the right, there are little arrow characters which normally correspond to whether you have the particular section expanded or closed. They normally point left '<' when collapsed and down 'V' when expanded.
In the Arachne Cura, they do not change as expected. Sometimes they do not point down when expanded, other times they stay pointed down.
Just something I noticed immediately on trying it.