Guitar strings,

Pretty obvious that bend angle where the string touches the wood is the problem. You can see all 3 of the visible strings starting to open up. So you or a luthier could file a groove in the bridge block to lessen that sharp bend angle where the string touches the rosewood bridge block. I think the issue will affect any string put in there.
That sharp dive into the wood is begging to chew up the winding on the string. There is too much tension on a nylon string to survive that.

I think the right touch up would be very beneficial knowing what’s happening. I’m looking into prospective luthiers