Me and another team using JPD found that the Edit Weighting option disappeared for the default multi-select field "Key customers" is no longer available. It was there up until very recently, last week, Fri Apr 28th.
I added a new Multi-select field and tested and that allowed me to "add weighting" and subsequently "edit weighting", but still no option on the default.
Anyone else have this disappear and found a way to put it back?