When you use gunsgunsguns cheat in Heretic: Shadow of the Serpent Riders, you gain access to Tempest Wand — a weapon that should be exclusive to Faith Renewed.
#Tempest Wand in Heretic: Shadow of the Serpent Riders
earnest rain
solemn cairn
This isn't surprising, since you're using a cheats. And all game elements are baked into one game
It will have the same effect if you enter a cheat for items in Hexen
Not a bug
earnest rain
Well, it shouldn't be like this for items either even if it's caused by using cheats. Weapons & items from specific game or expansion should only be tied to parts of the re-release where they're actually from. Therefore a bug.