For an instance hierarchy such as this:
Model → Part1 → Part2
When destroying Part2 and immediately calling :GetExtentsSize() on the model, it returns the previous model size, inlcluding Part1 and Part2. I would expect the call to return the model size after destroying Part2.
This happens in Studio and in published experiences.
I don’t know when this started happening. I only noticed it today.
Steps to reproduce:
Create a blank project and add this in a server script:
local model=Instance.new("Model",workspace)
local part=Instance.new("Part",model)
model.PrimaryPart=part
local bigPart=Instance.new("Part",part)
print(model:GetExtentsSize())
bigPart.Size=Vector3.one*10
print(model:GetExtentsSize())
bigPart:Destroy()
print(model:GetExtentsSize())
model:Destroy()
Output:
If the thread is yelded, or if the destroyed part was parented directly to the model, the issue goes away:
