Primitive creation snapping problem

Not sure if this is a bug or not but when I create a primitive example a box it does not snap on the surface when I am using the interactive creation. But when I just create a box it snaps. I am using July 28 version. Is this a bug or it is just disabled? Thanks

Hi,

Which tool/function are you using?
I use the "Primitive tool > drop" option, which is working.