This happened on a branch underneath the main canopy, which is on top of a screen. All the same I cut it off just be sure; it’s not a critical component of this plant. My question: is it bud rot / mold? I’m thinking no because it’s crinkly instead of slimy, but am wondering since it happened overnight. Nearby branches are not similarly afflicted. Thanks. (PS: low was 42 F this AM but no frost)