My brother in law is a travel agent specializing in Disney- he says he hasnt either.
FWIW in the 90s I used to work next to the Atlanta Marriot Marquis, which has a large atrium interior with 40+ stories. People would jump remarkably often (seemed like every 6 months) for a while.
It was remarkable how little media attention this got. Their media PR must have been very good. I know they had a response team that immediately covered everything with tarps.
It’s a lot harder to hide that now with cameras everywhere.
Of course not, it’s the happiest place on earth. I heard from a cast member years ago that if someone died on property, they would be moved off property before death was confirmed.