I do not get the soft mode in the stitch constrain. The hard mode works just fine, but snaps the selected points together which is undesirable for my case where I am trying to stitch on piece of cloth with itselfe. The Softmode just does nothing at all for me, whether I am trying to stitch multiple seperate pieces of cloth or points that are part of the same clothobject. In the viewport it shows the ‘connection lines’ but it does not have any effects on the physics at all.
I understand the soft stitch constrain to stitch them together but with some room/free space and a more loose effect, but not with no effect whatsoever.
I too experience this broken effect of soft mode. What I use it for is to visualize my stitching. Once I know my stitching is correct I change it back to hard mode.
Using Houdini Indie 20.5 Windows 11 64GB Ryzen 16 core. nVidia 3060RTX 12BG RAM.