Whenever a voxel is scaled down to 0, Zdoom crashes (gzdoom crashes in software renderer too, but not in hardware rend).
Attached a simple example. Summon RadSuit2 and after a second it will scale down, logging it's current scale. When is about to reach zero: crash!
We use it for the D4D holo system and @00:28 you can see the shotgun scaling down to disappear, that's where it crashes in software renderer.
Spoiler: Video