Why do the chests in creative give me purely primal guns?

I know creative chests have ALWAYS dropped primal guns but I've recently been testing a map and every single chest is primal gun after primal gun continuously. I just want the chests to be random but not only those certain weapons, which leads into the fact that a loot manager device (as seen in the battle royale creative template) would be literally amazing and so helpful. currently the only options are dealing with the primal drops, or customising every single chest individually, which would make the randomness of weapon drops not random at all. please tell me this isn't just me, and if there's any solutions this would also be greatly appreciated.