The report that killing a Rider on an altar allowed you to sacrifice its corpse was a wizard mode-only phenomenon in 3.4.3 (because you needed to use an altar at some location other than the Astral Plane, hence also needed to use ^G to get the Rider there), so not really a bug. But a post-3.4.3 change has made it possible to offer corpses from the floor on the astral level, unintentionally making it possible to sacrifice Rider corpses. This makdes #offer check specifically for them and trigger their revival if the attempt is made, same as done by pickup.
91 KiB
91 KiB