For some reason they can't spawn in moving stages like Delfinia, skyloft and pilotwing.
I randomly discovered it by playing online with a friend, with a ruleset where only bumpers appears just to mess with them. After one match that looked like pinball, pilotwings became the stage and... Not a single bumper appeared. So later I checked on pilotwings in training mode and yeah, the bumper just not appears in the item list!
It's nothing but i find it very curious and wanted to share this. Have a good day!
I randomly discovered it by playing online with a friend, with a ruleset where only bumpers appears just to mess with them. After one match that looked like pinball, pilotwings became the stage and... Not a single bumper appeared. So later I checked on pilotwings in training mode and yeah, the bumper just not appears in the item list!
It's nothing but i find it very curious and wanted to share this. Have a good day!